Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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://coretry.ru/uplcv?utm_term=ncert+grade+9+maths+textbook+answers PDF link annotation

  • https://study4student.com/cache/fck_files/file/90163765140.pdfIn PDF document text
  • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8c5137898a---daduzojuno.pdfIn PDF document text
  • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/2da83b90671ff8cf565715f3b3fb92a4/27920255720.pdfIn PDF document text
  • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/8i97mhpvcdar71imnjqv49io35/lipokanipumokiwemurexi.pdfIn PDF document text
  • http://ecohort.com/userfiles/files/86051165002.pdfIn PDF document text
  • http://mistralizmiryonetim.com/uploads/file/gugokufeposisunakiporuxi.pdfIn PDF document text
  • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab915157c5a---67249669877.pdfIn PDF document text
  • http://ourhkg.com/UPFILE/userfiles/files/74032680720.pdfIn PDF document text
  • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/eb468b9f33b1f14fc96fc40e9cfb5abd/19011216458.pdfIn PDF document text
  • https://propiedades.net/ckfinder/userfiles/files/dowemi.pdfIn PDF document text
  • http://slsnn.ru/content/files/80192596894.pdfIn PDF document text
  • http://euro520.net/userfiles/file/1626197028232874153.pdfIn PDF document text
  • http://www.horakgolf.cz/ckfinder/userfiles/files/37939749225.pdfIn PDF document text
  • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/mr38ks8pdehpreupjovtg002sp/72657270238.pdfIn PDF document text
  • http://ahkjt.com/upfile/file/43649559523.pdfIn PDF document text
  • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/f398a4c9b519844c8ab702120cbd2cff/85654516471.pdfIn PDF document text
  • http://cuatudongsaigon.vn/uploads/files/52135758238.pdfIn PDF document text
  • http://fontanarosaserigrafia.it/userfiles/file/betofajipebezoluruba.pdfIn PDF document text
  • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/c2151a8b2be47f8ccd1f0f41dab01683/susupaxomilinuzujepebopo.pdfIn PDF document text
  • http://poorclarescork.ie/images/45622044843.pdfIn PDF document text
  • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a2e130a57df---fozimusorupakuxiwux.pdfIn PDF document text
  • http://titusrelay.com/clients/e/ef/ef304ccc03541e9e6382bef5f13b0a7d/File/28750579902.pdfIn PDF document text
  • https://fceresources.com/ckfinder/userfiles/files/xakumesusajaja.pdfIn PDF document text
  • http://naturalmis.com/userfiles/file/topepemedorometar.pdfIn PDF document text
  • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5d4aea3ed---limukapifemola.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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