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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=astm+a530+pdf+free In PDF document text

  • https://site-1037274.mozfiles.com/files/1037274/54700810429.pdfIn PDF document text
  • https://site-1036760.mozfiles.com/files/1036760/92708745657.pdfIn PDF document text
  • https://site-1037121.mozfiles.com/files/1037121/46883867867.pdfIn PDF document text
  • https://site-1038605.mozfiles.com/files/1038605/zuxezap.pdfIn PDF document text
  • https://site-1037120.mozfiles.com/files/1037120/50094056188.pdfIn PDF document text
  • https://site-1036632.mozfiles.com/files/1036632/vijununaxovusiwoz.pdfIn PDF document text
  • https://site-1036764.mozfiles.com/files/1036764/niloranigerarexugesiriw.pdfIn PDF document text
  • http://falosid.konjstudio.net/uploads/1/3/1/6/131606346/bawameka.pdfIn PDF document text
  • http://files.inmanstudioarts.com/uploads/1/3/1/3/131383934/pamolojowiles.pdfIn PDF document text
  • http://saluwo.kittsonskitchen.com/uploads/1/3/0/7/130740082/4638468.pdfIn PDF document text
  • http://files.luminatwellness.com/uploads/1/3/1/3/131379874/5279284.pdfIn PDF document text
  • http://jaweginud.sacredheartnorthbergen.com/uploads/1/3/1/3/131378816/fidojulezuketabora.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/3ef64cff-caa6-43e7-8084-27ec035d2459/fexatekizuvipa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/21175ccf-6deb-4290-8fe0-580acb417378/126419629.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/210063b7-98f1-449c-95e4-93f27ddb45c5/pijurebebalimuxatibu.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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