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://cctraff.ru/strik?keyword=the+landlady+vocabulary+worksheet+answers In PDF document text

  • https://site-1037005.mozfiles.com/files/1037005/95448804298.pdfIn PDF document text
  • https://site-1036835.mozfiles.com/files/1036835/kazen.pdfIn PDF document text
  • https://site-1037169.mozfiles.com/files/1037169/gegubozeba.pdfIn PDF document text
  • http://files.newleaforganizingllc.com/uploads/1/3/1/8/131857071/6418065.pdfIn PDF document text
  • http://files.centeringprayerpensacola.com/uploads/1/3/0/7/130776503/labimexe.pdfIn PDF document text
  • http://jugub.rusticchalkdecorshop.com/uploads/1/3/2/7/132710773/2393790.pdfIn PDF document text
  • http://files.nolababyco.com/uploads/1/3/0/8/130873894/c931d1f226ed37b.pdfIn PDF document text
  • http://files.msusnackbox.com/uploads/1/3/1/8/131871739/2c150.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/710d04c0-56e7-4162-bc48-95b5b566ca4a/87220730030.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b5829a75-dddc-49f6-ae9f-a18e62174e72/sozogigolular.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b044d2ff-99c1-452e-94cf-562fa0eedb45/wunukofewapukofukilewesan.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5ac32525-6f07-4622-a203-36359fc27f48/70462855235.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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