Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
  Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• 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://ttraff.link/wix?keyword=credit+paper+follows+venmo

  • http://sumate.crosleycorporation.com/uploads/1/3/1/4/131483152/vuketudigiworoj.pdf
  • http://files.comealiveart.com/uploads/1/3/1/4/131453924/guraxusotaves.pdf
  • http://files.barefootindenim.com/uploads/1/3/0/7/130775516/1811476.pdf
  • http://files.idahoflyer.us/uploads/1/3/0/7/130776230/dovepewenana-wetixunu-vubifuzebopaf-guvuxowele.pdf
  • http://files.robirving.ca/uploads/1/3/1/4/131411474/lumagewe.pdf
  • http://files.equipasia.net/uploads/1/3/1/4/131408581/sufegifojas_junebew_jisebovaxu.pdf
  • http://files.megcweeks.com/uploads/1/3/0/8/130874516/f7c94d11.pdf
  • http://www.ascendercorp.com/
  • http://www.ascendercorp.com/typedesigners.html
  • https://d831c556-6b43-4ee6-b030-707eab5e4a17.filesusr.com/ugd/bba345_b33716a8fa9b4bd3a5c21ad9c251449c.pdf?index=true
  • https://f967b3aa-093a-4b9f-9f82-bd5bff222408.filesusr.com/ugd/a771bd_d151d51f10b5417c90ed1a4b88e787f3.pdf?index=true
  • https://fc133085-1a1f-4cc5-a169-ca34b6cc3d7a.filesusr.com/ugd/18574e_eae8692686f74431a8dff975930ab30a.pdf?index=true
  • https://246668b4-e5a2-4a8a-84e3-2a04b1085e82.filesusr.com/ugd/2f3216_d095b4a077fc41ce89543e65759cc563.pdf?index=true
  • https://6a663176-9a1c-44ae-b875-976a43145ced.filesusr.com/ugd/49488e_ac7bae4909984cee83a30d5c45fa2ed9.pdf?index=true
  • https://1a5317c8-fe91-47cb-8635-cafeec09f772.filesusr.com/ugd/9df9d6_ad2d7d4b43ba45428c31d6c50dbf9283.pdf?index=true
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://scripts.sil.org/OFL

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