Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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
• 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://cdn-cms.f-static.net/uploads/4485004/normal_60613431dd782.pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4389599/normal_6060bd443e09e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4390350/normal_5fe679ba70e04.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4495043/normal_5fd2181720313.pdfIn PDF document text
  • http://kitafoged.medianewsonline.com/56492225263.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4405662/normal_6041e4c2d94c7.pdfIn PDF document text
  • https://cdn.sqhk.co/figesuweno/cjfiahi/where._discover_cultural_events_in_your_city.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4451019/normal_60569294d3978.pdfIn PDF document text
  • https://cdn.sqhk.co/milujawago/ibyNjsv/oil_rig_wallpaper.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4408703/normal_60535511d6b17.pdfIn PDF document text
  • http://neriwor.medianewsonline.com/24836399358.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4467007/normal_603f80cf3e9fe.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4491665/normal_600515db21cb9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4444358/normal_60473aec1a9b3.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://feedproxy.google.com/~r/wb/ENAH/~3/mO-5lVq97NI/wb?keyword=zoom%20video%20conferencing%20guidelinesPDF link annotation
  • https://s3.amazonaws.com/genedesowul/can_u_use_in_formal_writing.pdfIn PDF document text
  • https://s3.amazonaws.com/voropa/39489673476.pdfIn PDF document text
  • https://s3.amazonaws.com/gazivemon/island_song_violin_sheet_music.pdfIn PDF document text
  • https://s3.amazonaws.com/saziwijaxodav/devil_hunter_lost_ark_guide.pdfIn PDF document text
  • https://s3.amazonaws.com/zolerazowubow/quotation_follow_up_email_template_to_client.pdfIn PDF document text
  • https://0cc2a7d0-6f33-4335-9ec9-554d9418487e.filesusr.com/ugd/cb4a18_001460c419da4f4cb173824912edfd62.pdf?index=trueIn PDF document text
  • https://6f847715-c85a-45d9-ae5c-7c68cc800588.filesusr.com/ugd/6e100b_0a942f28602a4fa99a7d0729224c7e9b.pdf?index=trueIn PDF document text
  • https://99ca13e2-8bf0-45b2-93fa-bbfb519f101f.filesusr.com/ugd/5392be_b0b4ac821f774eebbd22982e7fa137a7.pdf?index=trueIn 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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