Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Fake invoice / payment lure low SE_INVOICE_LURE
  Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
• 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=tally+voucher+entry+questions+pdf+download In PDF document text

  • http://files.utadeltazeta.com/uploads/1/3/1/4/131437859/d319aea3a3a.pdfIn PDF document text
  • http://bewofafoz.almostsponsored.com/uploads/1/3/1/4/131482822/01c9317823.pdfIn PDF document text
  • http://vevel.qslowsmoked.com/uploads/1/3/1/4/131406535/5563854.pdfIn PDF document text
  • http://files.nolapapa.com/uploads/1/3/1/6/131606490/xalubabate.pdfIn PDF document text
  • http://files.sdwoundedwarriortennis.org/uploads/1/3/1/4/131453431/bukuvoxasijunedu.pdfIn PDF document text
  • http://mawabos.ihmcenterforliteracy.com/uploads/1/3/0/8/130813592/6302605.pdfIn PDF document text
  • http://files.adamgormley.com.au/uploads/1/3/1/4/131437984/jerafowodore-xumufunamulez-rukon.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/0236/3047/files/download_world_conqueror_3_unlimited_medals.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/93912896808.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/action_rpg_online_android.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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