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=bleach+vs+naruto+2.6+f5 PDF link annotation

  • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/5d6f2da.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4391331/normal_5f8e71201ab0c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413977/normal_5f9cf2b8819d5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368492/normal_5f87c462db494.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/henghuili-files/7518581954.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/157f8f84-d359-44bd-9454-e31b11f72011/vagitinoju.pdfIn PDF document text
  • https://s3.amazonaws.com/tokafanawa/belajar_bahasa_jepang_dasar_untuk_pemula.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/beebf474-ec8b-4687-b8e9-8cab597952b3/lines_police_cad_rp.pdfIn PDF document text
  • https://s3.amazonaws.com/nakevoja/geek_love_book.pdfIn PDF document text
  • https://s3.amazonaws.com/tadevewuju/32036233409.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/be6290f2-166a-46aa-b5a6-0ad8e9326687/you_belong_to_me_lyrics_taylor_swift.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d57d87f8-caf9-4563-9e0f-634de24a4cd4/31128602308.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/eedc6126-e340-4cf3-9dd4-a8cea0b2f4a7/larawopiludubefaxo.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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