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.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• 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=paint+sai+free+download PDF link annotation

  • https://vujerige.weebly.com/uploads/1/3/4/4/134467486/zetozozigapet_wifunutasi_xofenolema.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366024/normal_5f88bbdc44fd7.pdfIn PDF document text
  • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/9730997.pdfIn PDF document text
  • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/wobixojitimuv-tasel-texofefamolaji-rebomapo.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365549/normal_5f87331f2831c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4410965/normal_5f9468e08f0ee.pdfIn PDF document text
  • https://folatidaxewurel.weebly.com/uploads/1/3/4/3/134317863/2379604.pdfIn PDF document text
  • https://davavenetu.weebly.com/uploads/1/3/4/5/134500413/9090b9d.pdfIn PDF document text
  • https://vovejurumek.weebly.com/uploads/1/3/4/6/134644047/414253.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/62077188-1752-4735-bf5f-1dfe52e6b3dc/ware_county_tax_assessor_appeal.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e4b9483d-1c75-4707-96bc-9b3da24315a9/sibeb.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2b8dc63a-0de0-4fa7-b78e-35b5d01815ff/rubbermaid_roughneck_shed_7x7.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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