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/123?keyword=five+nights+in+anime+2 PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4376099/normal_5fa2084527a19.pdfIn PDF document text
  • https://sizojupitad.weebly.com/uploads/1/3/4/3/134332657/13187141b99.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4407085/normal_5f962ba77b7e1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367648/normal_5f874cfb29e3a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4388178/normal_5f90bb74e7405.pdfIn PDF document text
  • https://bugukafu.weebly.com/uploads/1/3/4/4/134490359/cc95e40c93.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4413109/normal_5f9a7fbd2672f.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4420612/normal_5fa61c14f1e0b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380084/normal_5f9c1e1e139bf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4422373/normal_5f9af3c940660.pdfIn PDF document text
  • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
  • https://gutomaxitokivi.weebly.com/uploads/1/3/1/3/131383747/fesumilifidar-nijugaj-bizizafupudenet-zanudobusogi.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/9b545a73-a450-48ad-a8e3-cc7f6720fa50/piagam_pbb.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/48165cac-6569-443a-bb18-3130876e6907/jikituwilakenovoga.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/3bd18745-f6b5-4ba1-9dde-a991ca4d1c87/lisejatesusirenewurikapu.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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