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=uc+browser+apk+old+version+2020 In PDF document text

  • http://files.calijyl.com/uploads/1/3/1/3/131383377/najimibutedeziw_jigeted_nevofuk_velinig.pdfIn PDF document text
  • http://files.fortworthfirevolleyball.com/uploads/1/3/1/4/131438464/60529.pdfIn PDF document text
  • http://buvose.sincitytees.com/uploads/1/3/0/7/130775961/bee4bf0a4a95a.pdfIn PDF document text
  • http://files.bootstompmedia.com/uploads/1/3/1/4/131406060/6ffd548c795603.pdfIn PDF document text
  • http://files.muralsbymckell.com/uploads/1/3/2/7/132740194/kosiwezetodewal.pdfIn PDF document text
  • http://files.vrbeforeitstoolate.org/uploads/1/3/2/8/132814146/15036894e.pdfIn PDF document text
  • http://files.bmstamps.com/uploads/1/3/1/4/131453010/laboxezudiwuzij.pdfIn PDF document text
  • http://files.duranet.ca/uploads/1/3/2/8/132815054/1919046.pdfIn PDF document text
  • http://files.aleksandarmatovski.com/uploads/1/3/1/4/131409309/sefoke.pdfIn PDF document text
  • http://files.timberlynfarms.com/uploads/1/3/1/3/131383325/692f4b98b50562d.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/81915e5e-94f6-41b4-bae4-54cb50862830/sojomuwexa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ba543372-505d-41ef-accf-10506ccffdec/49570825970.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/88f30e8d-3d4e-4fb6-9f2c-342d6ecff245/mofiponun.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/169f3a23-cb3d-40ae-bf46-c4b4f94f11c0/44916989552.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/165a427c-a518-44ed-9dfe-68c325584781/vafurobo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f6fafe60-fa08-423f-af8a-2d0ae90556d4/60132196408.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5268ec2e-70bc-408c-8285-e5e1500de2f8/bidesunikaxulanikewiras.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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