{"id":16861,"date":"2023-09-06T19:28:08","date_gmt":"2023-09-06T19:28:08","guid":{"rendered":"http:\/\/www.namorgy.com\/blog\/?p=16861"},"modified":"2023-09-06T19:28:11","modified_gmt":"2023-09-06T19:28:11","slug":"beware-of-maldoc-in-pdf-a-new-polyglot-attack-allowing-attackers-to-evade-antivirus","status":"publish","type":"post","link":"http:\/\/www.namorgy.com\/blog\/2023\/09\/06\/beware-of-maldoc-in-pdf-a-new-polyglot-attack-allowing-attackers-to-evade-antivirus\/","title":{"rendered":"Beware of MalDoc in PDF: A New Polyglot Attack Allowing Attackers to Evade Antivirus"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">By TheHakerNews.com<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/thehackernews.com\/new-images\/img\/b\/R29vZ2xl\/AVvXsEiM2D3w64KlQixoasm0ho9kJ_jW3tQH87T4Y6l5kybBx2rLFb2mFeLbtLl6fw-dGoBvMb9WBQoPDQS6ZCKn8GMlJuHjkhk7nQZ7JDiaUSvt9d1nPytTr9tcnisTrVCdJotl__zzbdzVuF_2gs8Ze0anHJ0d84hNdcOH4mV79ix0tIMAB0J_HhbsNxP869CW\/s728-e3650\/kpi.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Cybersecurity researchers have called attention to a new antivirus evasion technique that involves embedding a malicious Microsoft Word file into a PDF file.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The sneaky method, dubbed\u00a0<strong>MalDoc in PDF<\/strong>\u00a0by JPCERT\/CC, is said to have been employed in an in-the-wild attack in July 2023.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8220;When a document is downloaded from the internet or email, it&#8217;ll carry a\u00a0<a href=\"https:\/\/thehackernews.com\/2022\/10\/unofficial-patch-released-for-new.html\" target=\"_blank\" rel=\"noreferrer noopener\">MotW<\/a>,&#8221; security researcher Will Dormann\u00a0<a href=\"https:\/\/twitter.com\/wdormann\/status\/1696197904262742370\" target=\"_blank\" rel=\"noreferrer noopener\">said<\/a>. &#8220;As such, the user will have to click &#8216;Enable Editing&#8217; to exit Protected View. At which point they&#8217;ll be learn [sic] that\u00a0<a href=\"https:\/\/thehackernews.com\/2022\/07\/hackers-opting-new-attack-methods-after.html\" target=\"_blank\" rel=\"noreferrer noopener\">macros are disabled<\/a>.&#8221;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">While real-world attacks leveraging MalDoc in PDF were observed a little over a month ago, there&#8217;s evidence to suggest that it was being experimented (&#8220;<a href=\"https:\/\/www.virustotal.com\/gui\/file\/93daf2aea61f29a41ba2c76e2b016dbd4256bc5659bf6e79a2e3d59c1b493681\" target=\"_blank\" rel=\"noreferrer noopener\">DummymhtmldocmacroDoc.doc<\/a>&#8220;) as early as May.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Read more: <a href=\"https:\/\/thehackernews.com\/2023\/09\/beware-of-maldoc-in-pdf-new-polyglot.html\">https:\/\/thehackernews.com\/2023\/09\/beware-of-maldoc-in-pdf-new-polyglot.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>By TheHakerNews.com Cybersecurity researchers have called attention to a new antivirus evasion technique that involves embedding a malicious Microsoft Word file into a PDF file. The sneaky method, dubbed\u00a0MalDoc in &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"sfsi_plus_gutenberg_text_before_share":"","sfsi_plus_gutenberg_show_text_before_share":"","sfsi_plus_gutenberg_icon_type":"","sfsi_plus_gutenberg_icon_alignemt":"","sfsi_plus_gutenburg_max_per_row":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-16861","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Beware of MalDoc in PDF: A New Polyglot Attack Allowing Attackers to Evade Antivirus -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.namorgy.com\/blog\/2023\/09\/06\/beware-of-maldoc-in-pdf-a-new-polyglot-attack-allowing-attackers-to-evade-antivirus\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Beware of MalDoc in PDF: A New Polyglot Attack Allowing Attackers to Evade Antivirus -\" \/>\n<meta property=\"og:description\" content=\"By TheHakerNews.com Cybersecurity researchers have called attention to a new antivirus evasion technique that involves embedding a malicious Microsoft Word file into a PDF file. 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