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
• 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.
• 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://jacksth.ru/123?utm_term=authorisation+letter+format+for+icegate+registration PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4387939/normal_5fd643ff01c6d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4500450/normal_601eebef1a1d1.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4450514/normal_5fe3c4e78c344.pdfIn PDF document text
  • http://rastet-malysh.ru/nijawufubepuf83xo.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4427274/normal_5fc7a29b59642.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4391308/normal_601da3bb247ae.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384155/normal_603c5aaf0c875.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4450746/normal_60476bb5cb90e.pdfIn PDF document text
  • http://lumacy.site/marine_corps_martial_arts_program_mcmapvzppu.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://2ddedb0e-b7b0-41c9-a8bc-c018bd0e6e4c.filesusr.com/ugd/70094d_7957840ff9e74df49469c7b779b395ed.pdf?index=trueIn PDF document text
  • https://b3709dad-42f4-4621-9b7e-74d31ca978cd.filesusr.com/ugd/f91cf1_6675b7863b0242bbbdbc5a42a3527daa.pdf?index=trueIn PDF document text
  • https://s3.amazonaws.com/sogovekevi/47079254418.pdfIn PDF document text
  • https://s3.amazonaws.com/musoxifuvitalo/policy_and_procedure_template_for_nonprofits.pdfIn PDF document text
  • https://625f08e2-3d8e-45b5-8e8c-b95d001c5c7c.filesusr.com/ugd/d94ae5_9e3df3154a0b4514a0a68aba0c74b04f.pdf?index=trueIn PDF document text
  • https://af431a04-9ebc-4ea4-a98d-45e4ffbfad14.filesusr.com/ugd/485053_30ae6154364048d78871a4a2cd17ae3d.pdf?index=trueIn PDF document text
  • https://s3.amazonaws.com/vabedafozo/theories_of_geological_evolution_catastrophism_vs_uniformitarianism.pdfIn PDF document text
  • https://123949be-7110-4ba3-a240-a7df06fb38ce.filesusr.com/ugd/80fd5d_a3c99850d6cc472c88005927b538de38.pdf?index=trueIn PDF document text
  • https://e8b83640-91e4-44a0-a69f-c2468797902f.filesusr.com/ugd/ee4a13_7a3e5e1d88384a49b71c2c93e20567d3.pdf?index=trueIn PDF document text
  • https://054d5c26-596f-48a3-87a7-0fc79031e5db.filesusr.com/ugd/599026_011f433aff72402d852f1f2112a036e8.pdf?index=trueIn PDF document text
  • https://17a6c5a8-0587-4adf-8126-5b439e15a62f.filesusr.com/ugd/54bec1_a8d3bab04c5d4cb59f9f9526cc1d759f.pdf?index=trueIn 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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