Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• Embedded URL info EMBEDDED_URL
  One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
  URL https://krisoc.ru/uplcv?utm_term=conjunctive+adverbs+worksheets+pdf PDF link annotation

  • http://eva.am/files/b7e370d1aafe7df3.pdfIn PDF document text
  • http://kcemsp.org/upload/editor/file/21276832563.pdfIn PDF document text
  • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/623f6272fdc2017add6f4dad8fa55068/sebinizuke.pdfIn PDF document text
  • https://vietfun.com.vn/wp-content/plugins/super-forms/uploads/php/files/ob367adti6d467a3cie6v084ev/54112648245.pdfIn PDF document text
  • https://fceresources.com/ckfinder/userfiles/files/wutawinowumizizavinilojis.pdfIn PDF document text
  • http://tokyosushilohaus.com/uploads/files/bukexivujokunesilu.pdfIn PDF document text
  • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c70adbb3e18---gijexozunomiwawezale.pdfIn PDF document text
  • https://aronabritcan.com/userfiles/file/tonitiwapexamajijaw.pdfIn PDF document text
  • http://vkp.ru/upload/global/file/kupejuluredo.pdfIn PDF document text
  • http://napiarsaigh.com/images/12610670361.pdfIn PDF document text
  • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160735cc71c178---34625626824.pdfIn PDF document text
  • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/6fd07d46d23698575f368f2b1bb0b4c4/53427273590.pdfIn PDF document text
  • https://vestol.bg/files/file/poniretazaxulo.pdfIn PDF document text
  • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f53c76746b---5852182721.pdfIn PDF document text
  • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee6fb2ee416---58267525019.pdfIn PDF document text
  • http://tantos.jp/js/upload/files/66953146964.pdfIn PDF document text
  • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/0886d03d170f8719dd1d297ff2c2c5e1/32743398410.pdfIn PDF document text
  • http://dunajecbiala.pl/upload/File/livoxikelukodasev.pdfIn PDF document text
  • http://tremonttemplemacon.com/clients/862779/File/bakutebobikubukobudozoni.pdfIn PDF document text
  • http://www.pattyn360.com/upload/forum/files/76677914336.pdfIn PDF document text
  • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6a64eeb4b---60671507223.pdfIn PDF document text
  • http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/rejow.pdfIn PDF document text
  • http://synergytaekwondo.com/click2buy_newp/userfiles/file/59755863468.pdfIn PDF document text
  • https://angkoronetour.com/userfiles/file/disulirifofovo.pdfIn PDF document text
  • http://gsemilia.it/userfiles/files/mawuni.pdfIn PDF document text
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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