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://trafficel.ru/123?keyword=inflammatory+diseases+diet PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4417658/normal_5f9d4e1d7109d.pdfIn PDF document text
  • https://dojumavuj.weebly.com/uploads/1/3/3/9/133997280/1071575.pdfIn PDF document text
  • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/3110545.pdfIn PDF document text
  • https://tarebizadutobi.weebly.com/uploads/1/3/4/3/134310067/0adf2ca47f0e0f.pdfIn PDF document text
  • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/lupasufevazetamu.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366958/normal_5f8d834505058.pdfIn PDF document text
  • https://xibopenevitamog.weebly.com/uploads/1/3/4/4/134488628/1934496.pdfIn PDF document text
  • https://jabezenenadako.weebly.com/uploads/1/3/4/2/134234778/1819b009f3419f1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4391024/normal_5fa13077732f1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367644/normal_5f875c13a6baa.pdfIn PDF document text
  • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/495735c5c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380887/normal_5f9ba38fd83ff.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://zileluzut.files.wordpress.com/2020/11/jepumolujulomivugesa.pdfIn PDF document text
  • https://s3.amazonaws.com/wilugugo/tafakujujofusamo.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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