Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://traffset.ru/123?keyword=literacy+in+elementary+art+education PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4365583/normal_5fa3964b29fa5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383295/normal_5f8d6f48f0855.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370057/normal_5f8819c21c3fc.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4422631/normal_5f9a1f91786a3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379606/normal_5f8bd553cbd83.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366055/normal_5f8720e5e81f2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4424025/normal_5f9f55523c5fb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4372383/normal_5f91e10d592e1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376856/normal_5f8a3380e91bd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366032/normal_5f873d703a5a1.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/zewimu/wish_me_puppy_walmart.pdfIn PDF document text
  • https://teviwuder.files.wordpress.com/2020/11/rivefom.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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