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=clash+of+clans+barbarian+costume PDF link annotation

  • https://rixilokif.weebly.com/uploads/1/3/4/1/134109141/5c5c9a26.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4447079/normal_5f9ffff182722.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369191/normal_5f96cc334f6ed.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4416494/normal_5f995b7a44f7e.pdfIn PDF document text
  • https://danawejenig.weebly.com/uploads/1/3/4/4/134499985/mawegekebugiduji.pdfIn PDF document text
  • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/renezojajesume.pdfIn PDF document text
  • https://volejodanuba.weebly.com/uploads/1/3/4/5/134593723/e71142b7e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367297/normal_5f93c104dadd1.pdfIn PDF document text
  • https://wavuvavezexa.weebly.com/uploads/1/3/0/7/130775629/cf29f6860cdad.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4426551/normal_5f9e8342a4472.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/henghuili-files/mufixi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1f43873a-31f4-48d8-b97a-b6c2f77e5eba/water_chemistry_mark_benjamin_2nd_edition.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b9ca7963-4454-4f96-ba27-35f12745843d/16248150867.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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