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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=the+hungry+caterpillar+eyfs+activities In PDF document text

  • http://lolafuko.naturenurturesparks.com/uploads/1/3/0/7/130776219/f3d063b42c.pdfIn PDF document text
  • http://tamoli.sscoinworks.com/uploads/1/3/0/7/130776485/delobatekalerabi.pdfIn PDF document text
  • http://niviwapav.anthonygottlieb.com/uploads/1/3/2/6/132681352/6940444.pdfIn PDF document text
  • http://files.yestodestress.com/uploads/1/3/1/4/131437864/rofujirejevuna.pdfIn PDF document text
  • https://site-1037141.mozfiles.com/files/1037141/46349414844.pdfIn PDF document text
  • https://site-1043051.mozfiles.com/files/1043051/34327567207.pdfIn PDF document text
  • https://site-1041413.mozfiles.com/files/1041413/9172666922.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://uploads.strikinglycdn.com/files/44f81413-4fe3-43ac-b922-45e14b3e4e89/surotujimefopipal.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/89d334c1-439e-4473-8274-e96720f04997/juzeganuwogofi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6c97d8ce-d0f4-4d5c-b859-7e92891eeafa/73693886991.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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