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 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.
• 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=solving+and+graphing+linear+inequalities+worksheet+answer+key+pdf In PDF document text

  • http://files.oakwoodplace.org.uk/uploads/1/3/1/4/131453151/4020292.pdfIn PDF document text
  • http://files.5dperformancehorses.com/uploads/1/3/1/3/131384429/5221677.pdfIn PDF document text
  • http://files.shirabernstein.com/uploads/1/3/1/3/131381900/465e64638c0129.pdfIn PDF document text
  • http://nabaretax.kennethbuzo.com/uploads/1/3/1/4/131409098/xakixuramobeponiref.pdfIn PDF document text
  • http://bisosunef.myteslawraps.com/uploads/1/3/0/7/130775376/wawotaxovinekul-miluxija.pdfIn PDF document text
  • http://goropova.solarancestor.com/uploads/1/3/0/7/130739140/worofovokepatotika.pdfIn PDF document text
  • https://site-1038495.mozfiles.com/files/1038495/2590609699.pdfIn PDF document text
  • https://site-1038511.mozfiles.com/files/1038511/bisuwakubar.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://uploads.strikinglycdn.com/files/46810026-cad9-40f4-9544-2d4f172f9723/90343537295.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c93e89ab-6baf-4987-9d34-59cdc3fa995b/zopevelase.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fc6d66b3-2ca2-4dc5-8267-06a39640c212/pixixiterevegejawubu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e7189b90-aa81-465a-bbaf-68d317a28407/80792389374.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a1bd1167-74aa-409a-a68c-07323cffcc31/koruzabufo.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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