Malicious PDF — malware analysis report

Heuristics 5

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• 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
• 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://ggtraff.ru/strik?keyword=biology+notes+for+class+12+pdf+in+english In PDF document text

  • https://site-1036678.mozfiles.com/files/1036678/83719826766.pdfIn PDF document text
  • https://site-1037192.mozfiles.com/files/1037192/sijojal.pdfIn PDF document text
  • https://site-1037262.mozfiles.com/files/1037262/29528587330.pdfIn PDF document text
  • https://site-1037205.mozfiles.com/files/1037205/94302095758.pdfIn PDF document text
  • https://site-1036872.mozfiles.com/files/1036872/rubaniramiza.pdfIn PDF document text
  • http://files.blueridgeracing.net/uploads/1/3/1/6/131606756/dumoki.pdfIn PDF document text
  • http://bitap.giafrino.com/uploads/1/3/1/1/131163992/gitetibitaja.pdfIn PDF document text
  • http://kitojeki.nctroop319g.org/uploads/1/3/1/3/131398232/tizona-fijazuxopevilar-wizuxosa-wotizipimiwug.pdfIn PDF document text
  • http://foteji.greyteakettle.com/uploads/1/3/0/7/130740558/eb487403.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/bab661b7-dc13-40ad-8ac1-98392e6068b3/vupokijazezenogerij.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b0a6544d-a417-4ef2-a45a-841d13281ea9/36858464569.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cca80bdd-2f94-46cb-a4a5-583e5f42b57d/4608258527.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1cc112ba-267b-40fb-89cf-8a3579bae613/monurosagubugenofukiliza.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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