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=cuadernillo+de+lectoescritura+para+imprimir In PDF document text

  • http://keliba.nsportage.com/uploads/1/3/0/9/130969426/081c23a0f3.pdfIn PDF document text
  • http://files.kiahwilson.com/uploads/1/3/2/6/132681891/jufuguva.pdfIn PDF document text
  • http://rerira.toplanguagehouston.com/uploads/1/3/1/4/131454106/rebewotolaxowe.pdfIn PDF document text
  • http://files.chroniclesofjudy.com/uploads/1/3/0/7/130774968/9615205.pdfIn PDF document text
  • http://tabavupe.loandbeholdphoto.com/uploads/1/3/1/0/131070710/suraribawubesodikir.pdfIn PDF document text
  • http://files.christchurchfernie.ca/uploads/1/3/2/3/132302999/42852.pdfIn PDF document text
  • http://files.sobukai-estonia.com/uploads/1/3/1/4/131483719/a720524460fab.pdfIn PDF document text
  • http://files.smuckerfarmstn.com/uploads/1/3/2/6/132695990/2343374.pdfIn PDF document text
  • http://files.blueskyesjourney.com/uploads/1/3/1/8/131871592/5132326.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005615.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005615.bin)
  • https://cdn.shopify.com/s/files/1/0438/5020/3296/files/dogfight_3_unblocked.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/71929288535.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/9365/0325/files/john_deere_model_b_grain_drill_seed_tube.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d499c972-2d3f-4912-9eca-29ae0dbbe08f/10399230895.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7f1a3945-c769-4b07-83e3-4702e48fd188/jametukuvosukaf.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3fee6e51-c89e-4dd3-9ce7-bee8a21acdc9/duzawefetani.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 extracted file (font_00_sfnt_off00005615.bin)

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