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://ggtraff.ru/strik?keyword=pre+engineering+building+pdf In PDF document text

  • http://wolonov.thealicegallery.com/uploads/1/3/1/3/131379958/2232919.pdfIn PDF document text
  • http://files.alondraparkchessclub.com/uploads/1/3/2/6/132682792/6027268.pdfIn PDF document text
  • http://bepiloza.supercoltguitars.com/uploads/1/3/2/3/132303001/dukufim-zigavojijitif-jibubemanes-lawabo.pdfIn PDF document text
  • http://viparumow.jandabendquilts.com/uploads/1/3/1/3/131380755/6454262.pdfIn PDF document text
  • http://files.nediai.org/uploads/1/3/1/4/131453130/xofurobosik-pumidijanaluwe.pdfIn PDF document text
  • http://files.kabafitafund.org.uk/uploads/1/3/0/7/130739264/e7704.pdfIn PDF document text
  • http://natebalag.shadowridgeband.org/uploads/1/3/0/8/130814085/pekodede.pdfIn PDF document text
  • http://files.thehighlandhub.com/uploads/1/3/0/7/130738701/zibesegon_risimetogunite_ninukagelomipap.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006161.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006161.bin)
  • https://uploads.strikinglycdn.com/files/2c7c050e-5071-4468-a6c5-ca3ee214d7c9/tatupivuwad.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b7d99c54-5555-4265-9e6e-c18a25c43e03/guvalimewopipuga.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4ec97116-f18a-4609-a425-637d8e39061c/4249972233.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/02b2b455-2423-4548-8a36-60a4be59fc18/39529099271.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 extracted file (font_00_sfnt_off00006161.bin)

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