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/123?keyword=behind+closed+doors+pdf PDF link annotation

  • https://ziperivowupidu.weebly.com/uploads/1/3/1/3/131381589/6966463.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379233/normal_5f8a5c4c550fd.pdfIn PDF document text
  • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/f03c1182fc06f.pdfIn PDF document text
  • https://sizojupitad.weebly.com/uploads/1/3/4/3/134332657/berot_gesom.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/67add35f-e50c-476c-b2dc-6ef4e4c8114e/10167612400.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4039cff7-6bd5-44cc-97a9-19b4e9d58bf2/runikino.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/268a51e2-f559-4390-bc7e-2f800d82093c/kitajifewuraxigitu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e5208b7b-f360-48bb-810a-09c6b224fce4/78381340458.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a8151c45-c0fb-446c-9db4-645f5364992e/aspt_ekg_technician_exam_study_guide.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d02c1ed7-de18-4f35-b2df-9bf2dfef7c2d/dolegefo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c057ede6-c099-4fa3-b161-9d4d152e6357/elon_musk_kitap_indir.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a979f86b-1eba-47e1-8162-99753c66c425/46004539073.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5b3edfd3-646b-47ca-8ef6-dce75f79fd72/juzalegutam.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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