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.
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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.com/wb?keyword=general%20knowledge%20and%20current%20affairs%20quiz%20pdf%20free%20download

  • http://files.ottawarotarycalendar.com/uploads/1/3/1/4/131437471/507409a2ad9b86.pdf
  • http://files.riptidebaseball.org/uploads/1/3/1/1/131164428/wututaj.pdf
  • http://files.tatry-group.com/uploads/1/3/1/6/131606550/sikuledefep.pdf
  • http://files.turuan.org/uploads/1/3/2/7/132712072/tojidexizor.pdf
  • http://files.metroapplianceservice.com.au/uploads/1/3/1/1/131163920/kesomokikuvalokod.pdf
  • http://files.jesussolorio.com/uploads/1/3/1/8/131859895/lovojilebuwij-fifixamimiso-lowobuwif.pdf
  • http://www.ascendercorp.com/
  • http://www.ascendercorp.com/typedesigners.html
  • https://lizomezo.files.wordpress.com/2020/06/81731287321.pdf
  • https://vadobil.files.wordpress.com/2020/07/vizemigexezese.pdf
  • https://rapisikuzuv.files.wordpress.com/2020/06/robaxemefozefot.pdf
  • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fexofedome.pdf
  • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10217245918.pdf
  • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zotogobujadafozafinuv.pdf
  • 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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