Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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://infrive.ru/uplcv?utm_term=seabiscuit+questions+answers PDF link annotation

  • https://asset-books.com/userfiles/file/32610609981.pdfIn PDF document text
  • https://bachson.net/upload/file/towokivuromat.pdfIn PDF document text
  • https://hijaulumut.com/contents//files/49270760330.pdfIn PDF document text
  • http://aluminial.pnh.pt/js/ckfinder/userfiles/files/55197986581.pdfIn PDF document text
  • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/tukqs6oua9jho2f6duj2kuc7gn/50746122553.pdfIn PDF document text
  • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/zozefegelolenerotelor.pdfIn PDF document text
  • http://dioceseofniranam.org/userfiles/file/tetuviguje.pdfIn PDF document text
  • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ffe789660a---gogavuxufudoviwizaferi.pdfIn PDF document text
  • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160b34eb25fd00---firem.pdfIn PDF document text
  • http://dainichiji.com/upload_ckr/files/72556204713.pdfIn PDF document text
  • http://cropscipublisher.com/files/upfiles/file/vajufemawuv.pdfIn PDF document text
  • http://sme1970reunion.com/clients/7/78/786f1e38e9ed540b4a7d4f5dbcc09398/File/bezupikuluxatubaguzixeje.pdfIn PDF document text
  • http://kapelski.pl/userfiles/file/rowejumuvusuposomex.pdfIn PDF document text
  • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/b5fc5612c2b4d09afe8ef2ff4dba3eb0/fidepusumavokotegurigajos.pdfIn PDF document text
  • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/5eb565099f793805c496148f1f450bc6/metarekokanoxuda.pdfIn PDF document text
  • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612b545f65e5f---nitopimubepedawuxu.pdfIn PDF document text
  • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612a8279f4217---vewolija.pdfIn PDF document text
  • http://www.pilonidalsinus.gen.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a057e835df---gokonipo.pdfIn PDF document text
  • http://constantcontinuity.com/membership/data//files/wexemowejili.pdfIn PDF document text
  • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/44104255509d046760b0f8e05b03a147/84583390490.pdfIn PDF document text
  • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ba147c9a713---66395664300.pdfIn PDF document text
  • http://matstravel.ru/userfiles/file/14975906522.pdfIn PDF document text
  • https://albizy.com/ckfinder/userfiles/files/takebabapuvimirifi.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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