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://trafffe.ru/wb?keyword=fan%20dancers%201930 PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4368493/normal_5f8f2126ccf62.pdfIn PDF document text
  • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/18ad995.pdfIn PDF document text
  • https://butebipibib.weebly.com/uploads/1/3/4/2/134265815/gotebixegoz_gowarewi_zubotal_luvob.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366622/normal_5f9a5d8ac2c4a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379374/normal_5f8d6168c905f.pdfIn PDF document text
  • https://rakikamizop.weebly.com/uploads/1/3/1/4/131437254/5872785.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369525/normal_5f9e4f90a0585.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387565/normal_5f972b4a4da9d.pdfIn PDF document text
  • https://vabejodero.weebly.com/uploads/1/3/4/3/134378136/bolusuf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375909/normal_5f90c9f15633e.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/9a531491-c781-4eca-add9-22e08a61ec48/69065820816.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e01365a7-869b-430a-b840-0cba3935cdde/warframe_weapon_mod_guide.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9a6ba3e9-0503-4dbb-b556-cd932d026c3f/msn_analyst_ratings.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f6e55e00-2460-4cef-89c4-59b68f622afa/525931765.pdfIn PDF document text
  • https://s3.amazonaws.com/naramuro/hip_replacement_pictures.pdfIn PDF document text
  • https://s3.amazonaws.com/jeworurowam/16349778453.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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