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://trafftec.ru/123?keyword=letter+of+satisfaction+wv PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4383470/normal_5fa6bd11ea2ca.pdfIn PDF document text
  • https://kufojomarolov.weebly.com/uploads/1/3/4/4/134401526/cbc8bc15eca.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383917/normal_5f8e0f6d33b13.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/18a8063e-3686-4975-9957-f0a7f679c0b2/86664086617.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2fb10bd2-6057-4c4c-aacf-47e893654d20/71192792871.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/42a7b3ce-ab7c-430a-904d-9dd9ed933325/mosupogipapekedos.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/939826f4-6f0d-4cff-b066-991a111e6175/pathfinder_tower_shield_build.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/27e24f5a-e06b-4752-a7e6-0f635864101d/romovoviduvufawiw.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/164be85e-49c0-4ad1-96f6-25779ff7aee6/41455474291.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1f9cc5a4-b0ce-45c8-ac7f-a013db7dfa3d/7833131028.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e62753eb-e6d5-4ba1-9bfb-aa985051887b/60595468370.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2db522c8-094f-4d6b-9776-fea17dcc0b4a/16186828109.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/dd97e676-a736-4701-84fd-428a60a7d7f2/52891669106.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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