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.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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=unhurried+tales+ruskin+bond+pdf+free+download In PDF document text

  • http://gotizogu.roysecityhomeschoolacademy.org/uploads/1/3/1/6/131637308/21d2932016f854e.pdfIn PDF document text
  • http://files.sassandcurls.com/uploads/1/3/1/8/131871685/nibajukevida_reparidor_wuwumilu.pdfIn PDF document text
  • http://rixove.mediaroommarketing.com/uploads/1/3/1/4/131407406/migokofibolarefor.pdfIn macro / runtime command snippet
  • http://files.winslowtabernacle.org/uploads/1/3/1/4/131438228/sekamoj_pevax.pdfIn PDF document text
  • http://files.richmondcountylittleleague.com/uploads/1/3/2/7/132740285/4058838.pdfIn PDF document text
  • http://files.bckmphnz.com/uploads/1/3/1/4/131437987/wolega.pdfIn PDF document text
  • http://files.legendsdolive.com/uploads/1/3/2/6/132681482/4229791.pdfIn PDF document text
  • http://rolofopuv.kistoneshiatsu.com/uploads/1/3/1/3/131380591/9941232.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/4a09173d-8756-4c4d-9655-18d52d41aed2/werusajunagogu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a56dd145-413f-4ff7-bd5a-66952da3d098/70041751370.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d7a94fb9-0bed-4d9a-82e4-c3fc8d5f1d00/wurilefisovizexi.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6a9fb3b1-8d49-4e22-8add-ae87699bda60/saviwid.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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