Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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?utm_term=mopar+nationals+2020 PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4370778/normal_5fbde67b13419.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4420013/normal_5fbe318a3c873.pdfIn PDF document text
  • https://dowikonusinewe.weebly.com/uploads/1/3/4/3/134374018/vifitutuzufibenawuri.pdfIn PDF document text
  • https://pevaluxuduta.weebly.com/uploads/1/3/4/5/134502983/jipirom_zanipiloz.pdfIn PDF document text
  • https://takotowi.weebly.com/uploads/1/3/4/3/134356266/1541430.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4405654/normal_5fc56db320401.pdfIn PDF document text
  • https://fobewesepujub.weebly.com/uploads/1/3/2/3/132303403/9452866.pdfIn PDF document text
  • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/52943516b6e.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://static1.squarespace.com/static/5fc527a3c6229360ecc88336/t/5fd67a12313c42342b90d4e0/1607891474751/7843016275.pdfIn PDF document text
  • https://static1.squarespace.com/static/5fc0052111f6a4198480c96b/t/5fc2af8808845d0924e1fab4/1606594447284/hydronium_ion_concentration_definition.pdfIn PDF document text
  • https://s3.amazonaws.com/xipavir/95246897482.pdfIn PDF document text
  • https://s3.amazonaws.com/vutame/52956649838.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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