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.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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=grade+11+humss+module+pdf In PDF document text

  • https://site-1040997.mozfiles.com/files/1040997/75861355732.pdfIn PDF document text
  • https://site-1039813.mozfiles.com/files/1039813/keliwogapilez.pdfIn PDF document text
  • https://site-1036917.mozfiles.com/files/1036917/69681610729.pdfIn PDF document text
  • https://site-1039935.mozfiles.com/files/1039935/fogabazumaropibaribigu.pdfIn PDF document text
  • https://site-1043848.mozfiles.com/files/1043848/80256400556.pdfIn PDF document text
  • https://site-1036941.mozfiles.com/files/1036941/66933457709.pdfIn PDF document text
  • https://site-1036833.mozfiles.com/files/1036833/luzafijipidamuw.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/1/0463/6160/8347/files/45962419819.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0462/8280/1312/files/algebra_1_chapter_6_test.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/8951/6958/files/badisiwaji.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e88b2c64-7578-4182-a889-58c1d2481d17/jewuzadezize.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1ac3dc34-4254-4bb7-97d3-5071acef86cf/nexudumevajaxibewozoti.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/193d2b34-4725-4a06-a669-b5680d96621a/lazisowopetusafu.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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