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.
• Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
  Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://ttraff.com/wix?keyword=algebraic+proofs+in+geometry+worksheet.
• 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.com/wix?keyword=algebraic+proofs+in+geometry+worksheet In PDF document text

  • http://files.dreamility.com/uploads/1/3/1/4/131406811/zigosaremiv.pdfIn PDF document text
  • http://files.lordofmath.com/uploads/1/3/1/1/131164431/5693d13b3341a3.pdfIn PDF document text
  • http://logoz.kaufman-law.com/uploads/1/3/1/0/131069910/454bf643c00.pdfIn PDF document text
  • http://files.nyabuoy.com/uploads/1/3/1/3/131381078/1657006.pdfIn PDF document text
  • http://tagaw.citytourstravel.com/uploads/1/3/1/8/131856970/3399944.pdfIn PDF document text
  • http://fowox.marychabre.com/uploads/1/3/2/3/132303181/4657953.pdfIn PDF document text
  • http://files.brissaeden.com/uploads/1/3/0/7/130739376/4209e3.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://70a72690-75f2-4237-b152-79289739bcf8.filesusr.com/ugd/97634b_b88c54db191847ce8b8acad4c9b299ff.pdf?index=trueIn PDF document text
  • https://e4be94bd-1f1c-4b5b-a5b5-033885bdaf61.filesusr.com/ugd/c8683e_bf8622bdd52d4f2196f3749e22cece0f.pdf?index=trueIn PDF document text
  • https://d11394e3-fe12-4582-9c75-c0075e788722.filesusr.com/ugd/8127dd_1a9f1edd85be4935842eb9133a2e7a0b.pdf?index=trueIn PDF document text
  • https://279020fc-ff99-4dda-ae4b-761ffa9328f3.filesusr.com/ugd/6116da_1983165d8a7943ec95116d9689d23863.pdf?index=trueIn PDF document text
  • https://680095a0-306a-4176-9437-08e20e2f7775.filesusr.com/ugd/1d64af_006f98418cfb40eabf686d310ab220dc.pdf?index=trueIn PDF document text
  • https://31ba992c-4c4a-4478-a693-72d1c4d66d0e.filesusr.com/ugd/debbe1_17a31e2e38d3472ba84c9382c3e9a952.pdf?index=trueIn 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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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