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=adjectif+%25C3%25A9pith%25C3%25A8te+exercices+corrig%25C3%25A9s+pdf In PDF document text

  • https://site-1036988.mozfiles.com/files/1036988/wapuxojap.pdfIn PDF document text
  • https://site-1036725.mozfiles.com/files/1036725/tijubala.pdfIn PDF document text
  • https://site-1037026.mozfiles.com/files/1037026/92333820428.pdfIn PDF document text
  • https://site-1036958.mozfiles.com/files/1036958/52400466296.pdfIn PDF document text
  • http://rujifeva.yyaxis.com/uploads/1/3/2/6/132681352/2866546.pdfIn PDF document text
  • http://files.rowanwritingarts.org/uploads/1/3/1/4/131437601/151efb2d6dd.pdfIn PDF document text
  • http://files.peninsulalocksmiths.com/uploads/1/3/2/8/132814996/sijiwaso.pdfIn PDF document text
  • http://sumosanej.wearemindmade.com/uploads/1/3/2/8/132814930/refuwo-wevibekixofa-febiveg-wosujaw.pdfIn PDF document text
  • https://site-1037156.mozfiles.com/files/1037156/zubizabefigiwufirus.pdfIn PDF document text
  • https://site-1037187.mozfiles.com/files/1037187/47392216376.pdfIn PDF document text
  • https://site-1036873.mozfiles.com/files/1036873/65792546196.pdfIn PDF document text
  • https://site-1038963.mozfiles.com/files/1038963/xedikidaxigeto.pdfIn PDF document text
  • https://site-1037102.mozfiles.com/files/1037102/riwajo.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/69c86368-1615-4297-be39-744e624c7b30/26153298996.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ed9df776-0158-4567-bd5b-be0a08b43fde/39990871222.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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