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.
• 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.
• 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/aws?keyword=monster+walter+dean+myers+pdf PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4370265/normal_5f9654a81a450.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382414/normal_5f9b20249a3bf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368979/normal_5f8c8ddf63ce3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381976/normal_5fa577c54716f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367000/normal_5f8a5e2e35599.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382780/normal_5f9b1c883850a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367938/normal_5f91729a75f23.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382189/normal_5f9278ecc3d60.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://uploads.strikinglycdn.com/files/be9c55ae-8f12-4487-a71e-b21ce53cb5d1/19819276008.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8333ff4e-37ee-4d48-a354-b4a9b9c3e1ac/eog_practice_math_3_grade.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/06edda37-d577-412c-8dc9-7e33e74cd9ec/mexunolezufik.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2e962d6c-0751-4745-b6ef-7192bdbf27e3/29698762842.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d3090814-9c5e-47d8-a058-3a8debab2c21/two_girl_one_cup.pdfIn PDF document text
  • https://s3.amazonaws.com/kokesatodixon/rogesolugumulinularotub.pdfIn PDF document text
  • https://vinutolaxuw.files.wordpress.com/2020/11/31893914496.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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