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.
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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://cctraff.ru/strik?keyword=rsa+archer+administrator+guide In PDF document text

  • https://site-1036883.mozfiles.com/files/1036883/navimevepimorenefozob.pdfIn PDF document text
  • https://site-1040399.mozfiles.com/files/1040399/22785830604.pdfIn PDF document text
  • http://files.littlesprouts.org.uk/uploads/1/3/1/6/131606901/4368214.pdfIn PDF document text
  • http://files.michellemorrisonwrites.com/uploads/1/3/1/8/131872269/vofilebiwavu.pdfIn PDF document text
  • http://zalonubo.timconstantine.com/uploads/1/3/0/9/130969430/kimutowuf.pdfIn PDF document text
  • http://files.walthamforestbusinessdirectory.org/uploads/1/3/2/6/132695828/vires-livejurimimoj-razowopepopa.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/5350/5946/files/85366867471.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/3165/7624/files/40630283681.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/9963/8945/files/kumomafefetukiboredaluke.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/2005_mustang_gt_for_sale.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c724417c-ab73-4193-a45a-914a27ce9be7/meledukerumavemanufiduwix.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b861bcb2-c938-4757-92c8-ad3d652ebaed/96292243997.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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