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.
• 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.
• 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://trafffi.ru/123?keyword=the+code+of+bushido+and+samurai+values PDF link annotation

  • https://lisiruzefixa.weebly.com/uploads/1/3/4/4/134495270/8035777.pdfIn PDF document text
  • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/zudoxazimepulige.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/374715a8-6954-4cd0-aef6-57e45997aa15/summoners_war_chilling_or_elsharion.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/479ef7eb-802b-441b-a975-0b0b7778e3f8/11366142294.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8daa7fe5-358b-4f3d-9584-a8bdc0ff23e6/19941916904.pdfIn PDF document text
  • https://pomazevesala.files.wordpress.com/2020/11/16305159611.pdfIn PDF document text
  • https://konomalipu.files.wordpress.com/2020/11/maria_woodworth_etter.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/7d86aa7b-d075-4f36-bfd8-02099082a6f2/nissan_leaf_battery.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/dd7ea673-554a-44f7-8227-c6593308c8f5/91118606507.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8188527a-921b-43d8-9b35-0a3c64ad647d/wezenelutafokovut.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/01b5fb06-3cb7-4af0-b97a-655b9e13b991/nadal_vs_federer_live_stream_wimbledon.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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