Malicious PDF — malware analysis report

Heuristics 5

• 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.
• 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=animal+scramble+worksheet In PDF document text

  • https://site-1039797.mozfiles.com/files/1039797/rulevopuri.pdfIn PDF document text
  • https://site-1037228.mozfiles.com/files/1037228/25128886116.pdfIn PDF document text
  • https://site-1048449.mozfiles.com/files/1048449/53400377393.pdfIn PDF document text
  • https://site-1038321.mozfiles.com/files/1038321/juwumalibiweta.pdfIn PDF document text
  • http://files.jenyoungskincare.com/uploads/1/3/2/7/132740457/477112.pdfIn PDF document text
  • http://files.paqu.org/uploads/1/3/1/8/131871894/vibofukupu_ruzererijolibij.pdfIn PDF document text
  • http://fibagat.21stcenturymediaplanning.com/uploads/1/3/0/9/130969140/wukalaberemo.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/ac7b39de-e64d-4a2d-a9d8-74f0a9506003/burexev.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2b7b053d-6e8c-4c6d-b385-1667a1d99f55/9386958324.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/60d0c9be-a80d-45e9-bcae-c4a9a113ee08/renidokunaselon.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2cb9d87c-4346-4e12-96b6-22b6cfa1dea2/12601627725.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d1b8f988-379b-483b-bb17-73ba37fea4a9/57084927041.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c969d93b-1f03-41c1-9e32-8255bec46824/boxasuj.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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