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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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://ggtraff.ru/strik?keyword=benedict+college+football+stadium In PDF document text

  • https://site-1036786.mozfiles.com/files/1036786/vosisaxereg.pdfIn PDF document text
  • https://site-1036929.mozfiles.com/files/1036929/39116024292.pdfIn PDF document text
  • https://site-1039787.mozfiles.com/files/1039787/48960281060.pdfIn PDF document text
  • http://files.thecuriouscommuter.com/uploads/1/3/0/8/130873983/9362810.pdfIn PDF document text
  • http://files.danrednermusic.com/uploads/1/3/1/6/131636917/pilivotasibu.pdfIn PDF document text
  • http://files.choengmongardens.com/uploads/1/3/1/4/131438176/rogejek_zefuxamogeved.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/8589f995-f085-414e-a25a-51d70e28db7e/nefager.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ec554683-3a99-4859-9371-0d3061d52921/51550574730.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/868b68ce-0d69-4f4d-81b1-8586832d6a06/9292907834.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b9271a79-005a-40e5-8e1f-496c2d8d963b/2394248243.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1d44743f-0985-485c-a9c8-b6c553e88f6c/94743782716.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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