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.
• Fake invoice / payment lure low SE_INVOICE_LURE
  Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
• 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://cctraff.ru/strik?keyword=solving+non+homogeneous+differential+equations+pdf In PDF document text

  • http://zagibuwu.sketsamoda.com/uploads/1/3/1/4/131407763/92cd4e99638.pdfIn PDF document text
  • http://waxawe.graffitiwgratitude.com/uploads/1/3/1/3/131381806/961383.pdfIn PDF document text
  • https://site-1037156.mozfiles.com/files/1037156/6474453002.pdfIn PDF document text
  • https://site-1036678.mozfiles.com/files/1036678/50008058898.pdfIn PDF document text
  • https://site-1037142.mozfiles.com/files/1037142/wafigavo.pdfIn PDF document text
  • https://site-1036829.mozfiles.com/files/1036829/dajamukowexew.pdfIn PDF document text
  • https://site-1037253.mozfiles.com/files/1037253/zoxadisivo.pdfIn PDF document text
  • https://site-1036724.mozfiles.com/files/1036724/78491132711.pdfIn PDF document text
  • https://site-1036733.mozfiles.com/files/1036733/gutazupobezipatorelir.pdfIn PDF document text
  • https://site-1036798.mozfiles.com/files/1036798/25949386750.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/7f9b2961-7d24-4aa9-af8e-8ed9a4a5502e/mosarepinabuboxogewukuren.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/324872a3-ce8a-4b51-970b-5ee01599c3e4/gemefukuwiwerugu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1ec3065a-bf63-4f12-8ee0-5052462ca44d/36587686719.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/67a25ec2-67e4-4697-9667-e474f3d5b300/zufenuwinejibugiwo.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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