Malicious PDF — malware analysis report

Heuristics 4

• 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.
• 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=vertical+and+horizontal+lines+worksheet+pdf In PDF document text

  • https://site-1038982.mozfiles.com/files/1038982/kuzewiretemogiguk.pdfIn PDF document text
  • https://site-1038432.mozfiles.com/files/1038432/zozelavenasav.pdfIn PDF document text
  • https://site-1036671.mozfiles.com/files/1036671/rupokefaz.pdfIn PDF document text
  • https://site-1037848.mozfiles.com/files/1037848/fedebipobewur.pdfIn PDF document text
  • http://files.akshop08.com/uploads/1/3/2/7/132710537/tomojudizu_nizenirifusev_zovikadu_wigov.pdfIn PDF document text
  • http://files.southtynesideagainstbullying.co.uk/uploads/1/3/0/7/130738836/vesolizutunix-ruvafutuwexesoz-xavewesiju.pdfIn PDF document text
  • http://files.mihjewelry.com/uploads/1/3/1/8/131856186/buwokigulilukabami.pdfIn PDF document text
  • http://files.van-bags.com/uploads/1/3/1/4/131452771/binesepefevi.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/b4ecaab4-8348-4474-b56e-9acbac839eb3/2327580703.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b63ae384-d927-42d5-9e94-bb82760b87e5/bimugoxebatividolawumun.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bb034a31-9495-4063-8968-f2b5e183fed1/pamadeguwaf.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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