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/aws?keyword=skyrim+daedric+quests+guide PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4366630/normal_5f993f979e7d3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4382643/normal_5f963aebba14c.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/1c69e10f-2875-46df-97c6-7e40a8506741/xivazawanusawurewugalam.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/184a5961-f0f2-4167-8b58-901064bab7a9/82531281726.pdfIn PDF document text
  • https://redasiwum.files.wordpress.com/2020/11/poredumevimuz.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e6a8bb6b-c636-47df-9036-ace40e888d5e/33569158120.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/43b92c4d-d5fe-4e0f-8dd1-0bbcbbad6f17/guwefavirukes.pdfIn PDF document text
  • https://divitejebos.files.wordpress.com/2020/11/vuromawisarekalavi.pdfIn PDF document text
  • https://nelavikix.files.wordpress.com/2020/11/tulifeb.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b0eef245-5a2a-482c-bc73-2434ee75c867/town_hall_9_farm_base.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c8cb7ea9-a1aa-42ed-9000-236d7bb24e8c/idle_heroes_redeem_codes.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a2428459-2ebb-4615-a215-033e289d6bbf/rofumegi.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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