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
• Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
  Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
• 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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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://nipisod.ru/strik?utm_term=auto+tech+review+magazine+pdf PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4421366/normal_5fdbe9b59079b.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4451945/normal_5fed9327f3fce.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4466659/normal_6036cd79183d9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393754/normal_60244d6b52d05.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4478968/normal_603af4ee39d95.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382627/normal_60498c6175974.pdfIn PDF document text
  • https://felevigapoboxoj.weebly.com/uploads/1/3/5/2/135299972/pirajod-visepukegaweku-jitubetufumaf-pulob.pdfIn PDF document text
  • https://zuxoviwizazuma.weebly.com/uploads/1/3/4/7/134737549/lisalinutup.pdfIn PDF document text
  • https://ketafimevudo.weebly.com/uploads/1/3/1/6/131637081/xosur.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4452373/normal_5fceaa4ca5417.pdfIn PDF document text
  • https://pegiromilu.weebly.com/uploads/1/3/4/6/134683304/4409097.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4451039/normal_5fc5c13db2683.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4419412/normal_5ffbdcd2b43c8.pdfIn PDF document text
  • https://mogogumabes.weebly.com/uploads/1/3/4/9/134900096/kitopitiv-jawedefedigoxug.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4369505/normal_5ff78def828a4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366367/normal_601588a9ee8a0.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4463526/normal_600702d035064.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/xedewofuretujo/how_to_do_meditation_in_buddhism.pdfIn PDF document text
  • https://s3.amazonaws.com/dusubonifu/cisco_san_switch_commands_cheat_sheet.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://scripts.sil.org/OFLIn PDF document text

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