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.
• Macro/content-enable lure medium SE_ENABLE_LURE
  Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
• 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/strik?keyword=haptens+and+adjuvants+pdf In PDF document text

  • https://site-1036686.mozfiles.com/files/1036686/39703504342.pdfIn PDF document text
  • https://site-1037071.mozfiles.com/files/1037071/94132106812.pdfIn PDF document text
  • https://site-1037260.mozfiles.com/files/1037260/xufudasoxez.pdfIn PDF document text
  • http://files.acfcrawford.com/uploads/1/3/0/9/130969725/3424800.pdfIn PDF document text
  • http://files.brockportcentralptsa.org/uploads/1/3/1/4/131453990/nixuwazu.pdfIn PDF document text
  • http://dosuxemuv.odellfergusonstudios.com/uploads/1/3/1/4/131408849/1103878.pdfIn PDF document text
  • https://site-1037848.mozfiles.com/files/1037848/97703503559.pdfIn PDF document text
  • https://site-1037094.mozfiles.com/files/1037094/sezux.pdfIn PDF document text
  • https://site-1037069.mozfiles.com/files/1037069/mofixowerajeluveri.pdfIn PDF document text
  • https://site-1036781.mozfiles.com/files/1036781/resuvubexoza.pdfIn PDF document text
  • https://site-1037172.mozfiles.com/files/1037172/20167988887.pdfIn PDF document text
  • https://site-1036852.mozfiles.com/files/1036852/dutugovexuterugopadobid.pdfIn PDF document text
  • https://site-1037071.mozfiles.com/files/1037071/nufexukumadavi.pdfIn PDF document text
  • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn 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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