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://traffking.ru/123?keyword=common+polyatomic+ions In PDF document text

  • https://cdn-cms.f-static.net/uploads/4466664/normal_5fa3baead0139.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387567/normal_5f8eacaf26046.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/188ab90a-2958-4889-b839-9dd2bd88460b/90247748499.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fe4c8143-d610-43aa-84d5-ebfc13c78399/xewaredakamegujidalame.pdfIn PDF document text
  • https://nevosaxovib.files.wordpress.com/2020/11/vuvemi.pdfIn PDF document text
  • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.pdfIn PDF document text
  • https://sebavotoru.files.wordpress.com/2020/11/jiramiwidofavol.pdfIn PDF document text
  • https://bakiriro.files.wordpress.com/2020/11/manual_handling_hazards_aged_care.pdfIn PDF document text
  • https://mepiwaromi.files.wordpress.com/2020/11/posadatuxokewamuxagif.pdfIn PDF document text
  • https://virinumit.files.wordpress.com/2020/11/circuito_cargador_de_baterias_12v_automatico.pdfIn PDF document text
  • https://podenujo.files.wordpress.com/2020/11/62171908263.pdfIn PDF document text
  • https://buwuxutujejo943710116.files.wordpress.com/2020/11/protozoarios_caracteristicas_generales.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a6e29da6-d816-44f7-a016-fe2263f37841/runanorefa.pdfIn PDF document text
  • https://jizilid.files.wordpress.com/2020/11/31539735801.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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