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=probability+theory+pdf+download In PDF document text

  • https://site-1042630.mozfiles.com/files/1042630/jisonubelamipokovel.pdfIn PDF document text
  • https://site-1040177.mozfiles.com/files/1040177/51187403143.pdfIn PDF document text
  • https://site-1041405.mozfiles.com/files/1041405/duripata.pdfIn PDF document text
  • https://site-1037253.mozfiles.com/files/1037253/51764455186.pdfIn PDF document text
  • https://site-1037230.mozfiles.com/files/1037230/88633877312.pdfIn PDF document text
  • https://site-1040104.mozfiles.com/files/1040104/77801620373.pdfIn PDF document text
  • https://site-1036951.mozfiles.com/files/1036951/62715486463.pdfIn PDF document text
  • https://site-1043375.mozfiles.com/files/1043375/75938863099.pdfIn PDF document text
  • https://site-1043923.mozfiles.com/files/1043923/zalibuwaxubopozosaz.pdfIn PDF document text
  • http://files.theantiquegarage.com/uploads/1/3/2/8/132815388/7013967.pdfIn PDF document text
  • http://files.serendipitycafemaynard.com/uploads/1/3/1/4/131437889/piroz.pdfIn PDF document text
  • http://files.australianguzheng.com/uploads/1/3/1/6/131607522/7643447.pdfIn PDF document text
  • https://site-1036830.mozfiles.com/files/1036830/63096487789.pdfIn PDF document text
  • https://site-1039132.mozfiles.com/files/1039132/97609499130.pdfIn PDF document text
  • https://site-1038720.mozfiles.com/files/1038720/niguberosinafizutavu.pdfIn 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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