Malicious PDF — malware analysis report

Heuristics 5

• 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.
• External URI info PDF_URI
  PDF contains an external URL action
• 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://traffset.ru/123?keyword=training+consultants+series+24 PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4449012/normal_5fa739a093339.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/pujirageg/pixel_games_unblocked.pdfIn PDF document text
  • https://mukomeremit.files.wordpress.com/2020/11/free_math_sheets_for_fourth_graders.pdfIn PDF document text
  • https://mefedekig.files.wordpress.com/2020/11/cursive_writing_letters_a_to_z.pdfIn PDF document text
  • https://zopivedewo.files.wordpress.com/2020/11/sudugezazalovat.pdfIn PDF document text
  • https://s3.amazonaws.com/legenapi/zowerodiko.pdfIn PDF document text
  • https://namepedof.files.wordpress.com/2020/11/12742194467.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0a6329da-74e1-41f8-b254-e277827b6081/ashley_and_anthony_married.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bb63bab8-9432-4f3b-845e-3e8da01e811a/rugulafarofokefa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e35fffbb-1f7f-40bc-9689-1c9501b70f75/aw_tozer_books_public_domain.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/85261748-09ae-4011-b786-83020717a692/divergence_of_vector_field_in_spherical_coordinates.pdfIn PDF document text
  • https://pazeden.files.wordpress.com/2020/11/86767518253.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/310c29bb-8a9e-4191-a376-6824ca314108/auglaize_county_auditors_department.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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