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://trafficel.ru/123?keyword=happy+room+2+free+download PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4408471/normal_5f9283ee2a792.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374540/normal_5f8c66274caca.pdfIn PDF document text
  • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/3780b5df91.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4403817/normal_5f917ffbb115c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365606/normal_5f875cf881af8.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366045/normal_5f88bde103937.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388819/normal_5f944c213163b.pdfIn PDF document text
  • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/kisewoviretawu.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367013/normal_5f87480b1860d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4426960/normal_5fa0d7ac94cb4.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375339/normal_5f9e75450b329.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/398a94d9-509b-4bc3-a03a-8de6a2f451b6/44982799302.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f67c50e5-5c7f-4f86-a886-df40b4698427/5573053328.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/29472e1d-04dc-44df-a5e1-9fe4e7c3fd02/vubiwumifosibopik.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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