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://trafftec.ru/123?keyword=ridgeway+grandfather+clocks+manual+1987 PDF link annotation

  • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/5175097.pdfIn PDF document text
  • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/55ce0e8f33ec.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4452609/normal_5fa65f69d6ebe.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369916/normal_5f9cc188d8125.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4406820/normal_5fa120aee2166.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4421050/normal_5f97e269197cc.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379744/normal_5f92f149020ea.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://kebupud.files.wordpress.com/2020/11/16674380217.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f949c05c-d0d3-4624-9627-b013a3b9e91a/wasupogi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/10d78a83-8bd9-4156-9790-d8d4134322bd/43417451787.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5bb339d2-6193-4353-8ee9-cc1519b999e3/24319768216.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fb74dc42-6abc-4d09-980d-f77fa9094b82/gitovuraduvezuxezojonik.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2e2c5db7-05f5-44d0-9d5f-4267bd795e6c/war_dragons_guide_base.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/544a9d15-801a-4d1c-a505-6b00c7b4e8e3/volume_by_cylindrical_shell.pdfIn PDF document text
  • https://xuxedoki.files.wordpress.com/2020/11/dreams_and_nightmares_piano_sheet.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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