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://trafftec.ru/123?keyword=treaty+of+versailles+worksheet+pdf+answers PDF link annotation

  • https://fiwixenolo.weebly.com/uploads/1/3/4/4/134493020/2542762.pdfIn PDF document text
  • https://ruwalabipuges.weebly.com/uploads/1/3/4/4/134465281/wexaro.pdfIn PDF document text
  • https://majujeleku.weebly.com/uploads/1/3/4/5/134590665/zosim.pdfIn PDF document text
  • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/mezegaliza-mimet-gukilomodekaje-vaxibopekexiti.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376374/normal_5f94daabbbf0a.pdfIn PDF document text
  • https://donokodupotev.weebly.com/uploads/1/3/4/3/134317189/8dda8620dcd.pdfIn PDF document text
  • https://wuwuleli.weebly.com/uploads/1/3/1/3/131398564/2953785.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368486/normal_5f8df2c9b86b4.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/d63d929f-1441-4a7a-92f7-17879f0d865b/99834004323.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c2cebe55-0f38-4eaa-9ea6-3bc39b8c9cd6/peregipadamakopiwatexep.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6dee831a-e4bf-4519-b3c2-1f8c6436d30e/57291374286.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2a8f4f23-3743-4bb1-8cd4-85992aaa14ff/34568782735.pdfIn PDF document text
  • https://s3.amazonaws.com/wegemebufojafak/bloodvine_set_classic_wow_mats.pdfIn PDF document text
  • https://s3.amazonaws.com/zowejunef/foborebepal.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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