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/123?keyword=convert+fractions+to+decimals+worksheet+year+4 In PDF document text

  • https://cdn-cms.f-static.net/uploads/4365638/normal_5f87018feec10.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366042/normal_5f87000c2d681.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365621/normal_5f86fcb979653.pdfIn PDF document text
  • https://site-1039779.mozfiles.com/files/1039779/xefur.pdfIn PDF document text
  • https://site-1040431.mozfiles.com/files/1040431/76823540294.pdfIn PDF document text
  • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/4107459.pdfIn PDF document text
  • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/zanazanekoxel.pdfIn PDF document text
  • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/05209.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/610af4ac-da08-403b-b125-a64f7feca46b/filujosaruv.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/89f6e617-4303-4f4f-aff3-73f5a3248b37/zaxexagilowowakoxut.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/02ce3ef9-101c-4349-b345-22cc905bb2b4/gosad.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0498/2131/9323/files/murray_sesame_street_clipart.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0464/3084/7128/files/radnor_middle_school_pa.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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