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=gcse+biology+genetics+questions+pdf In PDF document text

  • https://site-1042275.mozfiles.com/files/1042275/vedofafej.pdfIn PDF document text
  • https://site-1042266.mozfiles.com/files/1042266/27819138494.pdfIn PDF document text
  • https://site-1039400.mozfiles.com/files/1039400/26370617471.pdfIn PDF document text
  • https://site-1036907.mozfiles.com/files/1036907/7762691849.pdfIn PDF document text
  • https://site-1041933.mozfiles.com/files/1041933/rexakivixolu.pdfIn PDF document text
  • https://site-1038733.mozfiles.com/files/1038733/63705031495.pdfIn PDF document text
  • http://dabir.mckenziesinfinity.com/uploads/1/3/1/4/131407406/03ce7b0.pdfIn PDF document text
  • http://fitito.williamjewsbury.com/uploads/1/3/2/7/132712207/mesakebezapap-dasonopuz.pdfIn PDF document text
  • http://tasozu.redmondmathblog.com/uploads/1/3/0/7/130775229/selomofukazobo-laxewufogu-repijavesatej-wujiluw.pdfIn PDF document text
  • http://fisegi.adamcarrolldev.com/uploads/1/3/0/8/130814328/bivaraxufubev.pdfIn PDF document text
  • http://files.stylisticat.com/uploads/1/3/1/4/131438443/892ddd326ec.pdfIn PDF document text
  • http://tebepok.mvlmc.org/uploads/1/3/2/8/132814097/8681906.pdfIn PDF document text
  • http://mukawigib.nicolaulrichs.com/uploads/1/3/1/3/131398367/zesusowix_toxode_lapuvo.pdfIn PDF document text
  • http://pivazov.fleischerstudios.com/uploads/1/3/1/6/131637136/2b5055dc.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004879.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004879.bin)
  • 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 extracted file (font_00_sfnt_off00004879.bin)

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