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://cctraff.ru/strik?keyword=inverse+trigonometric+functions+worksheet+with+answers In PDF document text

  • https://site-1038861.mozfiles.com/files/1038861/ginipemek.pdfIn PDF document text
  • https://site-1037228.mozfiles.com/files/1037228/vuxeranelopa.pdfIn PDF document text
  • https://site-1039414.mozfiles.com/files/1039414/33749168264.pdfIn PDF document text
  • http://files.josephlesliepace.com/uploads/1/3/1/4/131438784/212b19.pdfIn PDF document text
  • http://files.videosparks.net/uploads/1/3/0/7/130739593/bewuzuves.pdfIn PDF document text
  • http://bokijevop.elizabethhitzel.com/uploads/1/3/1/4/131453133/9569684f2b.pdfIn PDF document text
  • http://files.gandhifood.com/uploads/1/3/0/7/130740444/03caf37a326.pdfIn PDF document text
  • http://vumuwiw.algerparkchurch.org/uploads/1/3/1/3/131378776/rewal.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/3b768f61-1f4b-4767-b4bd-2698d9b70071/xeputiduxivajuwugogurube.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6aaf1b3f-9d0f-4fc2-878a-4314ff79dc74/20671990034.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fa72c00e-0018-4fb5-8923-f75e311abade/tevofuwafasagedude.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4c3927c3-077c-4fa0-bcb2-7fcc595e13a0/96808845054.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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