Malicious PDF — malware analysis report

Heuristics 5

• 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://trafffi.ru/123?keyword=shaded+area+region+worksheets PDF link annotation

  • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/liguwodosimefet-fexamadora-fomubidotoje-buzeraxif.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4451227/normal_5f9eb9e1bba79.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370302/normal_5f8e01ddd3fe2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365649/normal_5fa795e3e009f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413983/normal_5fa393b5b6603.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366354/normal_5f93db161aa14.pdfIn PDF document text
  • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/retibaloma_nizufekevag.pdfIn PDF document text
  • https://xakokizape.weebly.com/uploads/1/3/4/3/134343218/perupif.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379380/normal_5fa46d28b8a60.pdfIn PDF document text
  • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/8574332.pdfIn PDF document text
  • https://wajajudamivigo.weebly.com/uploads/1/3/4/3/134359543/tupidobufed.pdfIn PDF document text
  • https://kuvikupomudu.weebly.com/uploads/1/3/4/4/134457818/zifomebarulero-genater.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408878/normal_5f950d728487f.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://s3.amazonaws.com/fufaragebo/ti_84_ce_emulator_online.pdfIn PDF document text
  • https://s3.amazonaws.com/jowutoneranemuk/wisavig.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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