Malicious PDF / .VIR — malware analysis report

Heuristics 8

• 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.
• Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
  PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
• Cracked-software lure uses download-gateway redirectors high PDF_CRACKED_SOFTWARE_REDIRECTOR_LINK_FARM
  PDF contains multiple cracked-software/keygen/serial-key lure links together with long encoded download-gateway URLs or known crack-download redirector hosts. This is stronger than generic piracy vocabulary: the document is an SEO lure that funnels users through redirect/download infrastructure commonly used for adware, unwanted software, or droppers.
• PDF links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
  PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
• PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
  PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
• 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.
• External URI info PDF_URI
  PDF contains an external URL action
• 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 http://xtraserp.com/glaza/UGF2bG92IFZSUGF/divider.qubits?siebler=ZG93bmxvYWR8Um43T1dScWJueDhNVFkxT0RJeU1EZzJObng4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA PDF link annotation

  • https://www.upscale.com/nova-wing-trainer/In PDF document text
  • https://superstitionsar.org/chameleon-run-deluxe-edition-with-license-key-with-serial-key-download-for-windows-march-2022/In PDF document text
  • http://www.expo15online.com/advert/train-simulator-southern-class-421-ae4cigae-emu-add-on-cheat-code-keygen-for-lifetime-free-download-mac-win-updated-2022/In PDF document text
  • https://loveandhappiness.tv/island-trainer-free-download-x64-april-2022/In PDF document text
  • https://used-gensets.com/advert/lostsmile-memories-keygenerator-with-registration-code-for-pc-2022-new/In PDF document text
  • https://edupedo.com/wp-content/uploads/2022/07/DarKnot_Trainer_Torrent_Activation_Code_Free_Latest_2022.pdfIn PDF document text
  • http://getloansmart.com/wp-content/uploads/2022/07/heatris.pdfIn PDF document text
  • https://hitcher.net/wp-content/uploads/2022/07/Super_Puzzle_Galaxy_Warp_Ball_DLC_Pack.pdfIn PDF document text
  • https://pregnancyweekla.com/cafe-0-the-drowned-mermaid-hack-x64-final-2022/In PDF document text
  • http://prayerandpatience.com/wp-content/uploads/2022/07/Atelier_Lulua_Roronas_Swimsuit_QuotFloral_Pareo_Quot_Trainer_Activation_Key_Free_Latest202-2.pdfIn PDF document text
  • https://nailpersona.com/wp-content/uploads/2022/07/how_fish_is_made_mem_patch__download_updated2022.pdfIn PDF document text
  • https://www.alalucarne-rueil.com/wp-content/uploads/2022/07/Steampunk_Graveyard_serial_number_and_product_key_crack___X64_March2022.pdfIn PDF document text
  • https://ninarkids.com/wp-content/uploads/2022/07/ambrgerv.pdfIn PDF document text
  • https://ozdesignhome.lt/nobody-saves-the-world-soundtrack-hack-mod-lifetime-activation-code-download-win-mac-latest/In PDF document text
  • https://westernmassrealtor.com/wp-content/uploads/2022/07/Fantasy_Grounds__TopDown_Tokens__More_Monsters_2.pdfIn PDF document text
  • https://thetruckerbook.com/wp-content/uploads/2022/07/glentan.pdfIn PDF document text
  • https://in-loving-memory.online/crazy-machines-2-anniversary-dlc-crack-serial-number-lifetime-activation-code-latest/In PDF document text
  • https://texvasa.com/2022/07/19/immersion-chess-hacked-product-key-x64-latest-2022/In PDF document text
  • http://www.hva-concept.com/wildcat-gun-machine-trainer-free-download/In PDF document text
  • https://lagaceta.montehermoso.com.ar/advert/star-ships-activation-latest-2022/In PDF document text
  • http://xtraserp.com/glaza/ugf2bg92ifzsugf/divider.qubits?siebler=zg93bmxvywr8um43t1dscwjuedhnvfkxt0rjeu1ezzjobng4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbdaIn PDF document text
  • http://www.tcpdf.orgIn 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/xap/1.0/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://www.aiim.org/pdfa/ns/extension/In PDF document text
  • http://www.aiim.org/pdfa/ns/schema#In PDF document text
  • http://www.aiim.org/pdfa/ns/property#In PDF document text
  • http://www.aiim.org/pdfa/ns/id/In PDF document text

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