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/aws?keyword=sanyo+battery+db-l80 PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4408719/normal_5f9da997cc99e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369511/normal_5f90d12d31377.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4385434/normal_5f901c6951039.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366027/normal_5f88fd126b25a.pdfIn PDF document text
  • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/cc4139.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4423443/normal_5f9f3b876a7e0.pdfIn PDF document text
  • https://sitawixabebel.weebly.com/uploads/1/3/4/3/134319036/3624137.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4385847/normal_5f90bbe6b783d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4381104/normal_5f8f1ec0ecc4b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4417827/normal_5f98ab69ae2f1.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4420592/normal_5f9d5560cd730.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4404514/normal_5f9d1c10e0e71.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/b65a333d-f6e1-46b8-93a3-4c0d83f7e342/playit_apk_free_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c7583cfd-b438-48e8-8a27-fdb45b8bdae5/77576637659.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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