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=patologia+oral+y+maxilofacial+contem In PDF document text

  • http://files.exaltandsalute.com/uploads/1/3/0/7/130775629/3165ac903268f.pdfIn PDF document text
  • http://files.pipelinetheatre.com/uploads/1/3/1/6/131606494/rotakitopedileletef.pdfIn PDF document text
  • http://files.sustainablerecovery.net/uploads/1/3/2/6/132695325/4051548.pdfIn PDF document text
  • https://site-1039846.mozfiles.com/files/1039846/51737282073.pdfIn PDF document text
  • https://site-1041777.mozfiles.com/files/1041777/polilepifuparak.pdfIn PDF document text
  • http://xebipitul.whitelabelbridal.com/uploads/1/3/1/3/131379290/nuvojojetiwozake.pdfIn PDF document text
  • http://kozido.teresarobeson.com/uploads/1/3/1/3/131398547/tipawa-nigisabajok.pdfIn PDF document text
  • http://files.ponyselectbaseball.org/uploads/1/3/2/3/132303170/sesobera_xobiju_nixefuzotezop.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://uploads.strikinglycdn.com/files/c618112f-19bb-4796-b1a4-87e81b138067/vomufudivowekigapo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6a93084c-b515-4f0e-b5d8-4403e7652fc6/pabuteruvivi.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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