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=molality+practice+worksheet+with+answers PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4444114/normal_5fa1ee1ed4015.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4410414/normal_5f9ad2441f905.pdfIn PDF document text
  • https://rurasudi.weebly.com/uploads/1/3/4/4/134485231/758172.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4452171/normal_5fa65ea18c49b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369512/normal_5f8b034b7365d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367903/normal_5f9f9d687670a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388279/normal_5f908eb98fc0b.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://uploads.strikinglycdn.com/files/83d46883-2248-437e-bb70-2f7fd193e1b2/85236907672.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3ce923c1-2a99-47b2-978a-54d9528eafdd/janif.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1ce92b0d-13ca-40bd-b3e9-28c3a397917d/fate_card_collection_skyrim.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/456d4e9b-3695-46d6-a3ab-461ae784e357/waretukelunosibalexipasez.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/212616fe-8158-44f7-9ca2-6fa931e23b93/14784451469.pdfIn PDF document text
  • https://woxelowobabi.files.wordpress.com/2020/11/rajilida.pdfIn PDF document text
  • https://nagerare.files.wordpress.com/2020/11/20544207917.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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