Malicious PDF — malware analysis report

Heuristics 4

• 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 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://gettraff.ru/strik?keyword=propriedades+coligativas+exercicios In PDF document text

  • https://site-1042013.mozfiles.com/files/1042013/67926610913.pdfIn PDF document text
  • https://site-1039671.mozfiles.com/files/1039671/riwez.pdfIn PDF document text
  • https://site-1038351.mozfiles.com/files/1038351/96781004253.pdfIn PDF document text
  • https://site-1039869.mozfiles.com/files/1039869/kazinewiwokenusekoguzeb.pdfIn PDF document text
  • http://files.kamiza.com/uploads/1/3/0/8/130813095/f35cab0c35.pdfIn PDF document text
  • http://gigox.johnpaulson.greatwebsitebuilder.com/uploads/1/3/0/7/130775451/d00ed85481d379c.pdfIn PDF document text
  • http://files.millsinsurancegroup.com/uploads/1/3/0/9/130969051/2205562.pdfIn PDF document text
  • http://files.saltedsage.com/uploads/1/3/0/9/130969577/fd60d610d.pdfIn PDF document text
  • http://rebuzi.seaintheskyhealing.com/uploads/1/3/1/3/131379103/8793992.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://uploads.strikinglycdn.com/files/39a010e4-f7cb-496b-9ad9-2428b4bc33b9/38450866167.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1d051dba-28ab-4cef-880d-94117e7fd7ba/60551379575.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e79915e9-befa-4ddd-8b2d-8ca2b208bb6b/36255493728.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/0377/2583/files/54097501224.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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