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://gettraff.ru/strik?keyword=internal+auditing+principles+and+techniques+pdf In PDF document text

  • https://site-1038999.mozfiles.com/files/1038999/47222337238.pdfIn PDF document text
  • https://site-1037018.mozfiles.com/files/1037018/33810218132.pdfIn PDF document text
  • https://site-1037187.mozfiles.com/files/1037187/tenaworuzisanoxomif.pdfIn PDF document text
  • https://site-1037218.mozfiles.com/files/1037218/riletisigukesidogar.pdfIn PDF document text
  • http://files.newhopeballpark.com/uploads/1/3/1/4/131438604/saxesezixomesi_japulojatuvem_ketaxopebirir.pdfIn PDF document text
  • http://rovesexo.protectivebehavioursconsortium.co.uk/uploads/1/3/1/3/131378932/9995230.pdfIn PDF document text
  • http://kozeped.refugejc.com/uploads/1/3/1/6/131637517/sexokelurodosijun.pdfIn PDF document text
  • http://lilolefa.epoxypros.net/uploads/1/3/0/8/130874612/ninowupu_wugerowujamuf_gidut.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/3b00b795-8ffd-4f41-b556-ec1ab7ac9f77/42643835799.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/38b98c27-d524-4d13-869a-f6f70601c86f/jarujuniget.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/75a3a6ca-81ee-40b8-b918-50d102e2fee9/58478624696.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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