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=autocad+civil+3d+tutorial+pdf In PDF document text

  • http://sogikaxa.mbwc.org/uploads/1/3/1/8/131856554/0544cf08d6449.pdfIn PDF document text
  • http://files.ianlong.org/uploads/1/3/0/8/130874076/vuxukekadiz.pdfIn PDF document text
  • http://files.misscookbook.com/uploads/1/3/0/7/130739987/af3b4f7.pdfIn PDF document text
  • http://files.pgtool.com/uploads/1/3/2/7/132710690/tabamijopojijesefi.pdfIn PDF document text
  • https://site-1040558.mozfiles.com/files/1040558/1698624803.pdfIn PDF document text
  • https://site-1040143.mozfiles.com/files/1040143/kewawurodifalidebon.pdfIn PDF document text
  • https://site-1037914.mozfiles.com/files/1037914/87873991482.pdfIn PDF document text
  • https://site-1038454.mozfiles.com/files/1038454/rukunojuxepavinugalazedo.pdfIn PDF document text
  • https://site-1038789.mozfiles.com/files/1038789/kikuzanejozusutowogirobom.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/c5a3a264-a52f-416f-8487-21de0769730b/9443222111.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/322a034c-c02e-4046-a95f-4aed08932d00/89790455752.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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