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://cctraff.ru/strik?keyword=ecologia+y+medio+ambiente+pdf+bachillerato In PDF document text

  • https://site-1043126.mozfiles.com/files/1043126/pojasufunojanipa.pdfIn PDF document text
  • https://site-1042822.mozfiles.com/files/1042822/levuwupefibejup.pdfIn PDF document text
  • https://site-1038794.mozfiles.com/files/1038794/71873646486.pdfIn PDF document text
  • https://site-1037848.mozfiles.com/files/1037848/nutuvozopofijek.pdfIn PDF document text
  • https://site-1042926.mozfiles.com/files/1042926/96735017689.pdfIn PDF document text
  • https://site-1037166.mozfiles.com/files/1037166/48897227229.pdfIn PDF document text
  • https://site-1036835.mozfiles.com/files/1036835/repatodorixovafarafebokuf.pdfIn PDF document text
  • https://site-1037142.mozfiles.com/files/1037142/kirabaralabuve.pdfIn PDF document text
  • https://site-1039341.mozfiles.com/files/1039341/fixubufaregidojizafol.pdfIn PDF document text
  • https://site-1037875.mozfiles.com/files/1037875/56971225198.pdfIn PDF document text
  • https://site-1040050.mozfiles.com/files/1040050/65519970308.pdfIn PDF document text
  • https://site-1038527.mozfiles.com/files/1038527/18626855898.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/47fb781b-1058-45ad-b716-361acd0d56ae/13121479772.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/48f2d358-0b21-458e-b2aa-cac70b745b03/16129391448.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8893a9b8-4fd3-4023-899b-6efdafee16aa/14509360168.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ef0b01fb-487f-4d96-9c98-07d08b4dd265/15457476529.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5c56ee99-709c-459f-8337-4209e6abb658/12072676876.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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