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 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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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://gettraff.ru/strik?keyword=arthur+benjamin+mathemagic+book+pdf In PDF document text

  • http://files.freehousefitness.com/uploads/1/3/2/8/132814892/pijes_miwape.pdfIn PDF document text
  • https://site-1036920.mozfiles.com/files/1036920/50879965513.pdfIn PDF document text
  • https://site-1037829.mozfiles.com/files/1037829/97430300760.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/8877/5830/files/table_manners_quiz.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/seburebufes.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/8347/1771/files/71327274475.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0498/4376/5403/files/winter_escape_uncommitted_showcase_2020.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/75717b1b-f57c-48c1-a38e-127a79998ff7/fibipeladepebarurejebe.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d897ee92-0a72-4e7b-8cc6-a5a1e05b3798/34246060925.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4b01993a-df6b-4aa7-9910-f5ffe56567ba/5635883776.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e70a3929-b5f4-4c29-929a-b1b2ccfecd22/10726956218.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/10ff0921-4197-4b1b-8665-6f54c9a1c69e/wizilitolup.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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