Malicious PDF — malware analysis report

Heuristics 9

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• Security software disable instruction high SE_SECURITY_BYPASS
  Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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/pbw?utm_term=battlefield+bad+company+2+highly+compressed+2gb PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4482215/normal_604ccf24b50d8.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4393016/normal_5fe2734931d49.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374715/normal_600b6ad5f0dbe.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4389366/normal_5fe901f899843.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4484818/normal_6047d4dca97f7.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4489035/normal_60394cb71b286.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4463266/normal_6049cc5de0c55.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4476952/normal_5feddf61e711b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382629/normal_602f936b4cab7.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4402963/normal_5ff86ea856e7d.pdfIn PDF document text
  • https://lopowizuxo.weebly.com/uploads/1/3/4/4/134438001/3255672.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408863/normal_60bc014560e6a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4404108/normal_5fd8e8dfe8cc6.pdfIn PDF document text
  • https://static.s123-cdn-static-d.com/uploads/4445119/normal_60afea5709410.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4494648/normal_605d2009d79a0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4454045/normal_602aa29b9f737.pdfIn PDF document text
  • https://pirulavedup.weebly.com/uploads/1/3/1/3/131379447/rumojog.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/ac2ec2e5-219e-4709-940b-4c9c2f17451b/34514622986.pdfIn PDF document text
  • http://vimadutukad.pbworks.com/f/76355252504.pdfIn PDF document text
  • http://ziludezubeju.pbworks.com/w/file/fetch/144476226/pulifeda.pdfIn PDF document text
  • http://zolunegoli.pbworks.com/w/file/fetch/144501015/sopivavu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0deede19-039b-4423-97e1-9f834251fb7a/mututofefi.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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