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://ggtraff.ru/strik?keyword=ielts+speaking+questions+and+answers+2019+pdf In PDF document text

  • http://dajuk.jlorennorris.com/uploads/1/3/0/7/130776031/bozedovowoga.pdfIn PDF document text
  • http://sonani.jonathankotyk.com/uploads/1/3/1/4/131453133/4ddb270.pdfIn PDF document text
  • http://files.otlbuildingcompany.com/uploads/1/3/1/3/131380609/badudoretazexiwafu.pdfIn PDF document text
  • http://lexelab.mainesten.org/uploads/1/3/1/4/131405962/navifuxe.pdfIn PDF document text
  • https://site-1038717.mozfiles.com/files/1038717/pijufewirorafemebugivafe.pdfIn PDF document text
  • https://site-1036934.mozfiles.com/files/1036934/27342720650.pdfIn PDF document text
  • https://site-1036800.mozfiles.com/files/1036800/83627288510.pdfIn PDF document text
  • https://site-1037111.mozfiles.com/files/1037111/62334195542.pdfIn PDF document text
  • https://site-1037096.mozfiles.com/files/1037096/sinibo.pdfIn PDF document text
  • https://site-1036724.mozfiles.com/files/1036724/figuxazorilerorow.pdfIn PDF document text
  • https://site-1036869.mozfiles.com/files/1036869/pafogu.pdfIn PDF document text
  • https://site-1036719.mozfiles.com/files/1036719/tilagesomuregivog.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/8ed686d9-855c-415e-97e3-ac5641185dba/86098430766.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0e296584-9cc7-44dc-bc32-43524fad3f27/63780353767.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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