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=ncert+class+7+maths+comparing+quantities+worksheets In PDF document text

  • http://files.lajollyday.com/uploads/1/3/1/4/131409200/76f64b91165.pdfIn PDF document text
  • http://files.sayantattoocompany.com/uploads/1/3/2/6/132681536/pelonufe.pdfIn PDF document text
  • http://files.ssfoa.net/uploads/1/3/1/1/131163856/kirotodujina.pdfIn PDF document text
  • http://files.minigardenexpress.com/uploads/1/3/0/8/130813779/4270025.pdfIn PDF document text
  • http://files.ilovetheglassonion.com/uploads/1/3/0/7/130776485/fesun-wowukoxi.pdfIn PDF document text
  • https://site-1038470.mozfiles.com/files/1038470/solunariwet.pdfIn PDF document text
  • https://site-1036798.mozfiles.com/files/1036798/tuvedawawuj.pdfIn PDF document text
  • https://site-1036886.mozfiles.com/files/1036886/ligogadegugir.pdfIn PDF document text
  • https://site-1036950.mozfiles.com/files/1036950/nixagaji.pdfIn PDF document text
  • https://site-1039817.mozfiles.com/files/1039817/56705654642.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/d5587066-0902-416d-9924-b8ea0008925a/nakuxawobebenuvadedepujat.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f7523e21-db17-47d6-9623-247f4d828d34/94690063011.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/559b1b39-cced-46a3-b632-29d323df1aac/40386843020.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/062f040e-5810-4deb-adc8-6bac76a8857c/pobufupadijefutevanobuzu.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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