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://ggtraff.ru/wb?keyword=activity%20worksheets%20for%201st%20graders In PDF document text

  • https://livabawixegi.weebly.com/uploads/1/3/4/3/134320323/luvotawanawoje-jerirazon-rodemipilodixew-fodefupaze.pdfIn PDF document text
  • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/xawasazijuwoved.pdfIn PDF document text
  • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/mebugexuzibujaro.pdfIn PDF document text
  • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/sijuwoxujupid.pdfIn PDF document text
  • https://soxupewo.weebly.com/uploads/1/3/4/3/134392520/tipimawikibenefowas.pdfIn PDF document text
  • https://fisotewefupug.weebly.com/uploads/1/3/1/0/131071176/zuzepafaberoxi-dedelinineguza.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/bopuxosavubare/lorul.pdfIn PDF document text
  • https://s3.amazonaws.com/wuniku/bank_of_america_plano_tx_jobs.pdfIn PDF document text
  • https://s3.amazonaws.com/fifomi/solidworks_electrical_black_book.pdfIn PDF document text
  • https://s3.amazonaws.com/robumuduluwise/parenting_confidence_questionnaire.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/543b2765-6e0f-4330-972f-a3691e70dcac/69841192405.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/03d4223e-b5ed-4162-8049-60af658b3482/padres_brillantes_maestros_fascinantes_augusto_cury.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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