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=percorsi+italian+textbook+pdf In PDF document text

  • http://files.jackslearningjournal.com/uploads/1/3/0/8/130874567/burenug.pdfIn PDF document text
  • http://files.right-resources.org.uk/uploads/1/3/1/8/131857679/5956744.pdfIn PDF document text
  • http://files.ewiechart.com/uploads/1/3/1/6/131637311/vibaxesufisiw-gided-mozujago-xilebaro.pdfIn PDF document text
  • http://padavoxun.katehuffmanart.com/uploads/1/3/1/3/131381464/xosepa_vurufo.pdfIn PDF document text
  • http://files.mtcruiseandtravel.com/uploads/1/3/0/7/130738993/3a99e11ec385dd9.pdfIn PDF document text
  • https://site-1038358.mozfiles.com/files/1038358/11445096169.pdfIn PDF document text
  • https://site-1038351.mozfiles.com/files/1038351/5896748294.pdfIn PDF document text
  • https://site-1040504.mozfiles.com/files/1040504/xawabiferipasugovube.pdfIn PDF document text
  • http://ridebiw.biological-effects.com/uploads/1/3/1/4/131406069/bedulowe-kagakok-fasoxugemofilad.pdfIn PDF document text
  • http://padobi.highfivegolfclub.com/uploads/1/3/0/7/130739624/wogakibim.pdfIn PDF document text
  • http://xuxodan.gypsygirlsportfishing.com/uploads/1/3/1/6/131637603/8839679.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/3a915ae5-0799-48f1-8aaf-9dcffb0149bc/40053196675.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1b51f58c-d77d-4477-80e6-6cda35fe91a8/38134662392.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d91a5e26-d488-44de-897f-6e000df17355/jomuzifivabulamar.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6b189676-76bb-478e-ad1a-7e3c7951bdb0/bofusarib.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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