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://gettraff.ru/strik?keyword=quadric+surfaces+cheat+sheet In PDF document text

  • https://site-1037869.mozfiles.com/files/1037869/35305715426.pdfIn PDF document text
  • https://site-1037094.mozfiles.com/files/1037094/dinezenagizejox.pdfIn PDF document text
  • https://site-1043536.mozfiles.com/files/1043536/72276492311.pdfIn PDF document text
  • http://files.dalestravel.info/uploads/1/3/0/8/130874585/1339546.pdfIn PDF document text
  • http://jovupeje.sylviezannier.com/uploads/1/3/1/6/131606289/zilumun.pdfIn PDF document text
  • http://files.sofialemann.com/uploads/1/3/1/6/131637109/02972b7f4acde.pdfIn PDF document text
  • http://files.centralfoodnetwork.org/uploads/1/3/1/3/131398379/lirawetadave_mufebukobij.pdfIn PDF document text
  • http://xidik.wheatgrasspublishing.com/uploads/1/3/2/6/132680981/e547940.pdfIn PDF document text
  • http://files.theverticalfiles.com/uploads/1/3/0/7/130738572/2604956.pdfIn PDF document text
  • http://files.nlmdjs.com.au/uploads/1/3/1/3/131398225/gosazow.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/0963/3188/files/average_total_cost_curve.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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