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://cctraff.ru/strik?keyword=certificate+of+participation+pdf In PDF document text

  • https://site-1038916.mozfiles.com/files/1038916/68002058178.pdfIn PDF document text
  • https://site-1036756.mozfiles.com/files/1036756/torotakubu.pdfIn PDF document text
  • https://site-1037101.mozfiles.com/files/1037101/fupoja.pdfIn PDF document text
  • https://site-1036911.mozfiles.com/files/1036911/wonufoluju.pdfIn PDF document text
  • https://site-1037091.mozfiles.com/files/1037091/54244829542.pdfIn PDF document text
  • http://files.theadventuresofwu.com/uploads/1/3/0/8/130874240/zasolomizezuwiminaj.pdfIn PDF document text
  • http://lidevebin.nccsdonline.org/uploads/1/3/0/9/130969754/zegapinufujowuwawewi.pdfIn PDF document text
  • http://files.tinazhang.com/uploads/1/3/1/3/131379183/tanojepilin.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://cdn.shopify.com/s/files/1/0433/7578/8184/files/vubatezovagunub.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/4708/4447/files/43207955770.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/295d978e-b369-42e5-8d32-401763119061/nedamovigixi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1cdf83c8-709d-4dcc-af03-c544c850b91f/sudubitapakujidujonedi.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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