Malicious PDF — malware analysis report

Heuristics 5

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• 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://traffine.ru/aws?keyword=alphabet+missing+letter+worksheets+printable In PDF document text

  • https://jifurutirijiguj.weebly.com/uploads/1/3/4/5/134528482/a1c09956f4d.pdfIn PDF document text
  • https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/8869675.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365576/normal_5f90cb2261177.pdfIn PDF document text
  • https://tudekazesabi.weebly.com/uploads/1/3/4/3/134367585/3604856.pdfIn PDF document text
  • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/ripagise-pogimex-mufidoxurisolab-widamifidigu.pdfIn PDF document text
  • https://timokejega.weebly.com/uploads/1/3/4/4/134454798/1483672.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/c3b1b08b-b2dc-40b1-8cae-b8ff2eb96f64/praxis_5001_study_guide.pdfIn PDF document text
  • https://s3.amazonaws.com/kezemiradigu/doxie_mixed_with_cocker_spaniel.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/715abe00-6919-4763-a0d1-21605771a3fa/72392273310.pdfIn PDF document text
  • https://s3.amazonaws.com/zonebon/78135664199.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6f7b094c-4f8a-4f60-9977-ca1fee705016/posekopoxi.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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