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://trafffe.ru/123?keyword=gustar+verb+practice+worksheet+answers PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4393035/normal_5f9541c0ae6ca.pdfIn PDF document text
  • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/3217335.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4411918/normal_5fa5c61f189b5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4428335/normal_5f9e743e85898.pdfIn PDF document text
  • https://fisokupavunimi.weebly.com/uploads/1/3/4/4/134469682/robebuw_jaxura.pdfIn PDF document text
  • https://gadevonetikob.weebly.com/uploads/1/3/4/3/134358307/d92aada811e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4418188/normal_5f973d038a9fc.pdfIn PDF document text
  • https://kesafoxubifode.weebly.com/uploads/1/3/4/4/134481064/safapixerezew.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/ruzaganog/carcinoma_epidermoide_cavidad_oral.pdfIn PDF document text
  • https://junevip.files.wordpress.com/2020/11/preparation_of_p-bromoaniline_from_p-bromoacetanilide_mechanism.pdfIn PDF document text
  • https://zitatotifewe.files.wordpress.com/2020/11/89388487589.pdfIn PDF document text
  • https://besarividem.files.wordpress.com/2020/11/64565099040.pdfIn PDF document text
  • https://s3.amazonaws.com/fedufiporara/5128154422.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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