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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=biocalculus+calculus+for+life+sciences+pdf+free In PDF document text

  • https://site-1037827.mozfiles.com/files/1037827/vafuruvos.pdfIn PDF document text
  • https://site-1036640.mozfiles.com/files/1036640/36133154949.pdfIn PDF document text
  • https://site-1036995.mozfiles.com/files/1036995/46688894368.pdfIn PDF document text
  • https://site-1037122.mozfiles.com/files/1037122/zimono.pdfIn PDF document text
  • https://site-1036722.mozfiles.com/files/1036722/70341674251.pdfIn PDF document text
  • http://files.co-operativecapitalism.com/uploads/1/3/0/7/130776661/1876091.pdfIn PDF document text
  • http://files.sarahmulderpsychology.com/uploads/1/3/0/7/130739214/3396642.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/1/0429/0904/0803/files/tuvok.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/snow_joe_ion18sb_battery.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/black_and_brown_long_haired_dachshund.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/0729/8712/files/syrian_hamster_colors_chart.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/4573/9941/files/60451944733.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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