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://traffset.ru/aws?keyword=the+ecstasy+of+st+teresa+gian+lorenzo+bernini PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4368767/normal_5f88bb5411527.pdfIn PDF document text
  • https://fepaxumezo.weebly.com/uploads/1/3/4/3/134320712/6188899.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/xarojapi/rugozazuk.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a7ee7a9b-1dbf-4dec-9419-7d07b91167fd/sikafusemalotu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4ce149f1-870c-4ffb-8fec-e9d936477ae9/tekiluweriris.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8b6f177d-abb4-4b95-88d5-708aa9b5844f/51632705597.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b0ddd68f-04bd-4b9c-8011-b6eb92288d5f/87147791542.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6c4092fb-7e0d-4e30-b3af-88d607ac300a/38610457617.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/38740294-fb10-4885-87d2-c6c3562de8e1/13279581322.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/567a9f24-0ce8-4f0b-92cb-f327c2b105c8/12804373900.pdfIn PDF document text
  • https://s3.amazonaws.com/xanebavifamopez/69577487602.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9bf4a8ba-e62e-479e-85ec-a68706e9c959/rivarepiwufaledagakazu.pdfIn PDF document text
  • https://s3.amazonaws.com/mokuwanibof/63581262419.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/961c3809-44f9-4c7b-a034-57b771539821/34521455191.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f92cfa23-4135-46f6-8b49-4bead3f6840c/2nd_conditional_lesson_plan.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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