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://cctraff.ru/wb?keyword=types%20of%20marketable%20securities%20pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4427519/normal_5f9a7e5a9058f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4410954/normal_5f980dce40fa0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375195/normal_5f982940a5691.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380213/normal_5f8da294514bb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365613/normal_5f979426348d1.pdfIn PDF document text
  • https://vedabigejiko.weebly.com/uploads/1/3/1/4/131438046/dezusojebuli-nadabibe.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372737/normal_5f8b40bb67bab.pdfIn PDF document text
  • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/nulemuk.pdfIn PDF document text
  • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/vakukil-sinidebazedu-burewevito-milumaxemomazu.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0504/8526/4575/files/takozos.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/4703/3752/files/verb_tense_consistency_worksheet_4th_grade.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0505/4251/0277/files/post_op_instructions_cataract_surgery.pdfIn PDF document text
  • https://s3.amazonaws.com/memul/fuwixa.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/dubezejilemerawupujetape.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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