{"id":6871,"date":"2013-11-26T09:00:59","date_gmt":"2013-11-26T01:00:59","guid":{"rendered":"https:\/\/blog.trendmicro.com.tw\/?p=6871"},"modified":"2013-11-26T10:30:59","modified_gmt":"2013-11-26T02:30:59","slug":"%e6%83%a1%e6%84%8fpdf%e5%88%86%e6%9e%90%e9%96%83%e9%81%bf%e6%8a%80%e8%a1%93","status":"publish","type":"post","link":"https:\/\/blog.trendmicro.com.tw\/?p=6871","title":{"rendered":"\u60e1\u610f PDF \u9583\u907f\u6280\u8853\u5206\u6790"},"content":{"rendered":"<p>\u5728\u8a31\u591a\u6f0f\u6d1e\u653b\u64ca\u5305\u88e1\uff0c\u60e1\u610fPDF\u6a94\u6848\u662f\u7528\u4f86\u611f\u67d3\u4f7f\u7528\u8005\u4ee5\u5e36\u5165\u5404\u7a2e\u60e1\u610f\u6a94\u6848\u7684\u6700\u5e38\u898b\u5a01\u8105\u4e4b\u4e00\u3002\u81ea\u7136\u5730\uff0c\u5b89\u5168\u5ee0\u5546\u6703\u6295\u8cc7\u5728\u6b63\u78ba\u5075\u6e2c\u9019\u4e9b\u6a94\u6848\u7684\u52aa\u529b\u4e0a \u2013 \u800c\u60e1\u610f\u4f5c\u8005\u4e5f\u6703\u6295\u8cc7\u5728\u9583\u907f\u9019\u4e9b\u5ee0\u5546\u7684\u5075\u6e2c\u4e0a\u3002<\/p>\n<p><a href=\"https:\/\/blog.trendmicro.com.tw\/wp-content\/uploads\/2013\/02\/PDF.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-4222\" alt=\"PDF\" src=\"https:\/\/blog.trendmicro.com.tw\/wp-content\/uploads\/2013\/02\/PDF.jpg\" width=\"190\" height=\"222\" \/><\/a><\/p>\n<p>\u900f\u904e<a href=\"https:\/\/cloudsecurity.trendmicro.com\/us\/technology-innovation\/our-technology\/smart-protection-network\/\">\u4e3b\u52d5\u5f0f\u96f2\u7aef\u622a\u6bd2\u6280\u8853<\/a>\u7684\u56de\u994b\u8cc7\u6599\uff0c\u6211\u5011\u7814\u7a76\u4e86\u5e7e\u7a2e\u4eca\u65e5\u5e38\u898b\u7528\u5728PDF\u6f0f\u6d1e\u653b\u64ca\u7684\u6280\u8853\u3002\u9019\u7bc7\u6587\u7ae0\u6703\u4ecb\u7d39\u9019\u4e9b\u6280\u8853\u3002\u5c0d\u65bc\u9019\u4e9b\u6280\u8853\u7684\u77ad\u89e3\u5247\u6709\u52a9\u65bc\u52a0\u5f37<a href=\"https:\/\/www.trendmicro.com.tw\/edm\/Tracking.asp?id=2651&amp;name=20110916\">\u8da8\u52e2\u79d1\u6280<\/a>\u5075\u6e2c\u9019\u4e9b\u6f0f\u6d1e\u7684\u80fd\u529b\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><b><i>\u5e38\u898b\u7684JavaScript\u9583\u907f\u6280\u8853<\/i><\/b><\/p>\n<p>\u5927\u591a\u6578PDF\u6f0f\u6d1e\u653b\u64ca\u78bc\u90fd\u6703\u4f7f\u7528\u67d0\u7a2e\u5f62\u5f0f\u7684\u5167\u5d4cJavaScript\u3002\u6b63\u56e0\u70ba\u5982\u6b64\uff0c\u5e38\u898b\u7684JavaScript\u9583\u907f\u548c\u6a21\u7cca\u8655\u7406\u6280\u8853\u4e5f\u6703\u88ab\u7528\u5728\u9019\u88e1\u3002\u4f8b\u5982\uff1a\u5b57\u7b26\u4e32\u66ff\u63db\u3001try-catch \u4f8b\u5916\uff0cfromCharCode\u8ff4\u5708\u90fd\u53ef\u4ee5\u7528\u5728PDF\u6a94\u6848\u3002<\/p>\n<p>\u4e0b\u9762\u7684\u7a0b\u5f0f\u78bc\u7247\u6bb5\u986f\u793a\u4e00\u4e9b\u88ab\u4f7f\u7528\u7684\u6280\u8853\uff1a<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" alt=\"\u60e1\u610fPDF\u5206\u6790\u9583\u907f\u6280\u8853\" src=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2013\/10\/PDF-evasion-1.jpg\" width=\"600\" height=\"371\" \/><\/p>\n<p><i>\u5716\u4e00\u3001\u5e38\u898b\u88ab\u4f7f\u7528\u7684JavaScript\u9583\u907f\/\u6df7\u6dc6\u8655\u7406\u6280\u8853<\/i><\/p>\n<p>&nbsp;<\/p>\n<p>\u9019\u500b\u7279\u5b9a\u7684\u6f0f\u6d1e\u653b\u64ca\u78bc\u91dd\u5c0d<a href=\"https:\/\/www.adobe.com\/support\/security\/bulletins\/apsb10-07.html\">CVE-2010-0188<\/a>\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><b><i>\u7de8\u78bc\u5167\u5bb9\u548c\u51fd\u6578\u540d\u7a31\u7684INFO\u7269\u4ef6<\/i><\/b><\/p>\n<p>\u9019\u985e\u578b\u7684\u6df7\u6dc6\u8655\u7406\u5c07\u52a0\u5bc6\u904e\u7684\u7a0b\u5f0f\u78bc\u5b58\u5230\u90e8\u5206INFO\u7269\u4ef6\uff08\u5982\u6a19\u984c\u3001\u4e3b\u984c\u3001\u4f5c\u8005\u7b49\uff09\u3002\u53ef\u4ee5\u7528JavaScript\u4f86\u63d0\u53d6\u548c\u89e3\u78bc\u52a0\u5bc6\u904e\u7684\u60e1\u610f\u7a0b\u5f0f\u78bc\u3002<\/p>\n<p>\u5728\u6b64\u6a23\u672c\u88e1\uff0cINFO\u7269\u4ef6\u7684\u6a19\u984c\/\u5efa\u7acb\u8005\u6b04\u4f4d\u5f88\u8a6d\u7570\u3002\u5efa\u7acb\u8005\u6b04\u4f4d\u662f\u975e\u5e38\u9577\u7684\u5b57\u4e32\uff0c\u7528\u7121\u6578\u9a5a\u5606\u865f\u4f86\u65b7\u958b\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" alt=\"\u60e1\u610fPDF\u5206\u6790\u9583\u907f\u6280\u8853\" src=\" https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2013\/10\/PDF-evasion-2.jpg\" width=\"500\" height=\"168\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><i>\u5716\u4e8c\u3001INFO\u7269\u4ef6\u5167\u7684\u7de8\u78bc\u904e\u7a0b\u5f0f\u78bc<\/i><\/p>\n<p><!--more--><\/p>\n<p>\u8ddf\u524d\u9762\u7684\u6f0f\u6d1e\u653b\u64ca\u78bc\u4e00\u6a23\uff0c\u9019\u6a23\u672c\u4e5f\u662f\u91dd\u5c0dCVE-2010-0188\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><b><i>\u91dd\u5c0dJavaScript\u57f7\u884c\u5e73\u53f0\uff08Runtime\uff09<\/i><\/b><\/p>\n<p>\u9019\u7a2e\u985e\u578b\u7684\u9583\u907f\u6280\u8853\u662f\u70ba\u4e86\u8eb2\u907f\u5206\u6790\u5de5\u5177\u3002\u57f7\u884cPDF\u6a94\u6848\u5167\u7684JavaScript\u9700\u8981\u7279\u5b9a\u7684\u57f7\u884c\u5e73\u53f0\u7a0b\u5f0f\u5eab\u3002\u9019\u7a0b\u5f0f\u5eab\u662fAdobe Reader\u7684\u4e00\u90e8\u5206\uff0c\u4f46\u5927\u591a\u6578\u5206\u6790\u5de5\u5177\u4e26\u4e0d\u5305\u542b\u3002\u7576\u60e1\u610f\u8edf\u9ad4\u767c\u73fe\u90e8\u5206\u51fd\u6578\u4e26\u7121\u5b9a\u7fa9\u6216\u7121\u6cd5\u6b63\u78ba\u52d5\u4f5c\uff0c\u60e1\u610f\u7a0b\u5f0f\u78bc\u5c31\u4e0d\u6703\u88ab\u89e3\u5bc6\u3002<\/p>\n<p>\u53ef\u4ee5\u88ab\u7528\u5728\u9019\u88e1\u7684\u51fd\u6578\u5305\u62ec\u6aa2\u67e5\u6a94\u6848\u5927\u5c0f\u548c\u6aa2\u67e5\u61c9\u7528\u7a0b\u5f0f\u7248\u672c\u3002<\/p>\n<p>\u5728\u4e0b\u9762\u7684\u4f8b\u5b50\u88e1\uff0capp.endPriv\u6703\u88ab\u6aa2\u67e5\uff0c\u5982\u679c\u5b83\u6c92\u6709\u88ab\u6b63\u78ba\u5b9a\u7fa9\uff0c\u5c31\u4e0d\u6703\u57f7\u884c\u60e1\u610f\u7a0b\u5f0f\u78bc\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" alt=\"\u60e1\u610fPDF\u5206\u6790\u9583\u907f\u6280\u8853\" src=\" https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2013\/10\/PDF-evasion-3.jpg\" width=\"500\" height=\"198\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><i>\u5716\u4e09\u3002\u6aa2\u67e5\u7279\u5b9a\u51fd\u6578<\/i><\/p>\n<p>&nbsp;<\/p>\n<p><b><i>\u6b04\u4f4d\u5c6c\u6027\u548c\u7bc4\u570d\u51fd\u6578<\/i><\/b><\/p>\n<p>\u6709\u4e9b\u60e1\u610f\u8edf\u9ad4\u6703\u4f7f\u7528XML\u8868\u55ae\u67b6\u69cb\uff08XFA\uff09\u7684\u6b04\u4f4d\u5c6c\u6027\u4f86\u505a\u689d\u4ef6\u6aa2\u67e5\u3002\u5c31\u50cf\u4e0a\u9762\u7684\u4f8b\u5b50\uff0c\u5206\u6790\u5de5\u5177\u4e26\u6c92\u6709\u6b63\u78ba\u7684\u300c\u5be6\u4f5c\u300d\u9019\u4e9b\u7bc4\u570d\u51fd\u6578\u3002\u5982\u679c\u7279\u5b9a\u7269\u4ef6\u548c\u51fd\u6578\u7121\u6cd5\u88ab\u627e\u5230\uff08\u5728\u9019\u4f8b\u5b50\u4e2d\u662fImageFiled1\u7269\u4ef6\u548cZZA\u51fd\u6578\uff09\uff0c\u518d\u6b21\u5730\uff0c\u60e1\u610f\u7a0b\u5f0f\u78bc\u5c07\u4e0d\u6703\u88ab\u57f7\u884c\u3002<\/p>\n<p>\u5728\u5176\u4ed6\u6848\u4f8b\u4e2d\uff0c\u53ef\u80fd\u6703\u5229\u7528\u5bec\u5ea6\u548c\u9ad8\u5ea6\u7b49\u5c6c\u6027\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" alt=\"\u60e1\u610fPDF\u5206\u6790\u9583\u907f\u6280\u8853\" src=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2013\/10\/PDF-evasion-4.jpg\" width=\"500\" height=\"238\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><i>\u57164\u3001\u6b04\u4f4d\u5c6c\u6027\u548c\u7bc4\u570d\u51fd\u6578<\/i><\/p>\n<p>&nbsp;<\/p>\n<p><b><i>\u540d\u7a31\u7a7a\u9593\u63a7\u5236<\/i><\/b><\/p>\n<p>\u5728\u4eca\u5e74\uff0c\u6211\u5011\u770b\u5230\u4e00\u500b\u65b0\u7684\u5f31\u9ede\uff08CVE-2013-2729\uff09\u6703\u642d\u914d\u65b0\u7684\u9583\u907f\u6280\u8853\u3002<\/p>\n<p>\u6211\u5011\u770b\u5230\u6709JavaScript\u7a0b\u5f0f\u78bc\u904b\u4f5c\u5728\u4e0d\u540c\u7684\u540d\u7a31\u7a7a\u9593\uff08\u7531name\u5c6c\u6027\u63a7\u5236\uff09\u3002\u5206\u6790\u5de5\u5177\u6709\u6642\u6709\u56f0\u96e3\u52a0\u4ee5\u8655\u7406\u3002\u5728\u5e95\u4e0b\u7684\u7247\u6bb5\u88e1\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\u6709\u5169\u500b\u4e0d\u540c\u7269\u4ef6 \u2013 util\u548cspray\uff0c\u4ee5\u53ca\u51fd\u6578\u548c\u8b8a\u6578\u5982\u4f55\u88ab\u7528\u5728\u9019\u5169\u500b\u540d\u7a31\u7a7a\u9593\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" alt=\"\u60e1\u610fPDF\u5206\u6790\u9583\u907f\u6280\u8853\" src=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2013\/10\/PDF-evasion-5.jpg\" width=\"500\" height=\"221\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" alt=\"\u60e1\u610fPDF\u5206\u6790\u9583\u907f\u6280\u8853\" src=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2013\/10\/PDF-evasion-6.jpg\" width=\"500\" height=\"275\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" alt=\"\u60e1\u610fPDF\u5206\u6790\u9583\u907f\u6280\u8853\" src=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2013\/10\/PDF-evasion-7.jpg\" width=\"500\" height=\"410\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><i>\u5716\u4e94\u81f3\u4e03\u3001\u88ab\u4f7f\u7528\u7684\u540d\u7a31\u7a7a\u9593\u548c\u8b8a\u6578<\/i><\/p>\n<p>&nbsp;<\/p>\n<p><b><i>eval<\/i><\/b><b><i>\u51fd\u6578\u5167\u7684\u8b8a\u6578\u7bc4\u570d\u6539\u8b8a<\/i><\/b><\/p>\n<p>\u9019\u985e\u578b\u7684\u9583\u907f\u65b9\u5f0f\u662f\u57fa\u65bcPDF JavaScript\u5f15\u64ce\u7684\u67d0\u4e9b\u7d30\u7bc0\u3002\u770b\u770b\u4e0b\u9762\u7684\u7a0b\u5f0f\u78bc\u7247\u6bb5\uff1a<\/p>\n<p>(function(){var v=\u201dinner\u201d; e=eval; e(\u201calert(v)\u201d); })();<\/p>\n<p>\u4e0a\u8ff0\u7a0b\u5f0f\u78bc\u5728Adobe Reader\u5167\u53ef\u4ee5\u6b63\u5e38\u904b\u4f5c\uff0c\u300cinner\u300d\u7a0b\u5f0f\u78bc\u6703\u88ab\u57f7\u884c\u3002\u4f46\u7528\u5176\u4ed6\u7684JavaScript\u5f15\u64ce\u5247\u53ef\u80fd\u7121\u6cd5\u6b63\u5e38\u904b\u4f5c\uff0c\u800c\u6703\u56de\u61c9\u932f\u8aa4\u3002\u9019\u53ef\u4ee5\u9632\u6b62\u60e1\u610f\u7a0b\u5f0f\u78bc\u88ab\u5206\u6790\u3002<\/p>\n<p><b><i>\u7e3d\u7d50<\/i><\/b><\/p>\n<p>\u6211\u5011\u76f8\u4fe1\u5728\u9019\u4e9b\u9583\u907f\u65b9\u6cd5\u4e2d\uff0c\u6709\u5169\u7a2e \u2013 \u6aa2\u67e5Javascript\u57f7\u884c\u5e73\u53f0\u548c\u6539\u8b8a\u8b8a\u6578\u7bc4\u570d \u2013 \u5c07\u6703\u5728\u672a\u4f86\u88ab\u66f4\u5ee3\u6cdb\u5730\u4f7f\u7528\u3002\u9019\u4e9b\u662f\u6700\u65b0\u7684\u7db2\u8def\u72af\u7f6a\u5206\u5b50\u4f01\u5716\u9003\u907f\u5075\u6e2c\u7684\u4f5c\u6cd5\u3002<\/p>\n<p>\u8da8\u52e2\u79d1\u6280\u73fe\u6709\u7684\u7db2\u9801\u4fe1\u8b7d\u8a55\u6bd4\u670d\u52d9\u6703\u5075\u6e2c\u4e26\u5c01\u9396\u4f7f\u7528\u9019\u4e9b\u6280\u8853\u7684\u7db2\u7ad9\u3002\u4e0a\u9762\u6240\u63d0\u5230\u7684\u6a23\u672c\u4e5f\u88ab\u5075\u6e2c\u70ba\uff1aTROJ_PIDIEF.ERQ\uff0cTROJ_PIDIEF.ERP\uff0cTROJ_PIDIEF.SMAL\u548cTROJ_PIDIEF.SMAP\u3002<\/p>\n<p>@\u539f\u6587\u51fa\u8655\uff1a<a href=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/malicious-pdf-analysis-evasion-techniques\/\">Malicious PDF Analysis Evasion Techniques<\/a><\/p>\n<p>\u4f5c\u8005\uff1a<a href=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/author\/michaeldu\/\">Michael Du\uff08\u5a01\u8105\u5206\u6790\u5e2b\uff09<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>\u9084\u4e0d\u662f\u8da8\u52e2\u79d1\u6280\u7c89\u7d72\u55ce?\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc\u7db2\u8def\u5b89\u5168\u7684\u79d8\u8a23\u548c\u5efa\u8b70\uff0c\u53ea\u8981\u5230<a href=\"https:\/\/www.facebook.com\/trendmicrotaiwan\">\u8da8\u52e2\u79d1\u6280\u7c89\u7d72\u7db2\u9801<\/a>\u00a0\u6216\u4e0b\u9762\u7684\u6309\u9215\u6309\u8b9a\u52a0\u5165\u7c89\u7d72,\u5404\u7a2e\u7c89\u7d72\u5c08\u5c6c\u9a5a\u5947\u597d\u79ae,\u4e0d\u5b9a\u671f\u653e\u9001\u4e2d<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"https:\/\/blog.trendmicro.com.tw\/wp-includes\/js\/tinymce\/themes\/advanced\/img\/trans.gif\" width=\"320\" height=\"240\" data-mce-json=\"{'video':{},'params':{'src':'https:\/\/www.facebook.com\/plugins\/likebox.php?id=255176705131&amp;width=350&amp;connections=0&amp;stream=false&amp;header=false&amp;height=62','frameborder':'0','scrolling':'no'},'hspace':null,'vspace':null,'align':null,'bgcolor':null}\" \/><\/p>\n<p><a href=\"https:\/\/www.trendmicro.com.tw\/edm\/Tracking.asp?id=3152&amp;name=20131021\">\u6309&lt;\u9019\u88e1&gt;\u4e0b\u8f09<\/a>\u00a02013\u53f0\u7063\u9032\u968e\u6301\u7e8c\u6027\u5a01\u8105\u767d\u76ae\u66f8<a href=\"https:\/\/www.trendmicro.com.tw\/edm\/Tracking.asp?id=2928&amp;name=20120702\"><img loading=\"lazy\" decoding=\"async\" title=\"APT \u653b\u64ca\" alt=\"APT \u653b\u64ca\" src=\"https:\/\/www.trend.com.tw\/apt\/images\/banner-1.jpg\" width=\"588\" height=\"232\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u25ce \u6b61\u8fce\u52a0\u5165\u8da8\u52e2\u79d1\u6280\u793e\u7fa4\u7db2\u7ad9<br \/>\n<\/strong><a 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