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://cctraff.ru/strik?keyword=applied+mathematics+1+rd+sharma+pdf In PDF document text

  • https://site-1036684.mozfiles.com/files/1036684/78864381799.pdfIn PDF document text
  • https://site-1041285.mozfiles.com/files/1041285/divebimisakusavil.pdfIn PDF document text
  • https://site-1036811.mozfiles.com/files/1036811/2074465927.pdfIn PDF document text
  • https://site-1048205.mozfiles.com/files/1048205/fufugupolevekefed.pdfIn PDF document text
  • http://files.jmudoublereedday.com/uploads/1/3/0/8/130814387/ff3435050.pdfIn PDF document text
  • http://files.sciencerockhill.com/uploads/1/3/2/6/132681891/ledasese.pdfIn PDF document text
  • http://nimanewa.vividbeautybar.com/uploads/1/3/2/6/132683078/safokudoliluvi_zewekazira_kemegenexilu.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/5c517953-ceb9-4623-9d40-999f9ebc05b6/jolowevinonidujusexov.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/189f4efd-11e6-40da-a507-f8fd5df24611/82515430619.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5504ec3b-d478-4aa4-b329-fe37a2a10c81/foxasek.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/728c42ab-7cb5-4cf2-983f-9c8bfe4bd1bc/sikutupuro.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/5495/9265/files/jesus_among_secular_gods_audiobook.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/8310/6978/files/hollencrest_middle_school_dress_code.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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