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=hunger+games+ar+quiz+answers+quizlet PDF link annotation

  • https://wejakoguxi.weebly.com/uploads/1/3/4/3/134324676/xezugepabubodufavuxu.pdfIn PDF document text
  • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/2122744.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4420020/normal_5f987ffe288a1.pdfIn PDF document text
  • https://mazovibodekimiv.weebly.com/uploads/1/3/4/3/134398511/1a0767fd2db.pdfIn PDF document text
  • https://benerema.weebly.com/uploads/1/3/1/4/131408328/f4927.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4390661/normal_5f9c810246d8d.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/5006ae86-3294-4808-ae11-4b54c5bb2a84/pokemon_omega_ruby_delta_episode_serebii.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/adb18b87-46da-4287-8a3d-8e4e2a04d34b/vetasug.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6e2e3f20-9922-452c-90d8-9d67968be951/97659297671.pdfIn PDF document text
  • https://s3.amazonaws.com/wegemebufojafak/list_of_one_syllable_words_that_start_with_r.pdfIn PDF document text
  • https://s3.amazonaws.com/retobifulipo/potakadi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2de2433b-3b51-49c4-a5de-f4a77c1b4c1a/xofur.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b5b18ad0-5e2a-431f-bc49-e0ab5f4568a1/27235346980.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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