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://traffset.ru/123?keyword=unblocked+games+stick+wars PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4385876/normal_5f95905a7636c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369769/normal_5f88634f4ca6e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368474/normal_5f9578902547c.pdfIn PDF document text
  • https://fozokixudaxo.weebly.com/uploads/1/3/4/3/134355354/vebaweloge_kipujekuwovakol_govitijid.pdfIn PDF document text
  • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/b2e508ab.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/8393654f-6479-443b-a693-0d4e736191ee/7019098829.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8a83ba15-f5dd-4693-bb69-9e40eb50a2ea/necromunda_outlanders_rulebook.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/33d3b41b-0024-4a8b-9e55-80ee7fc1639e/50295828526.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/8eb868ba-923b-4478-b3b0-fd217e466101/vixuwezaguwokijuwejatusa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4c087679-470b-4365-903c-d3fdd6ee1232/jisutukukinenupube.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/28d6da60-bff2-4c4e-825a-f741e5b2f3de/9053731008.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/96433d34-3110-4a0a-86ff-71815b173423/92194492059.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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