Malicious PDF — malware analysis report

Heuristics 9

• 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.
• 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
• 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://esecuritys.com/flyovers/isnare.customizations.oppressing?ZG93bmxvYWR8Z1oxTVdGeGIzeDhNVFkyT1RnMk1qSTRObng4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA=bmF0aXZlaW5zdHJ1bWVudHNtYXNjaGluZXNvZnR3YXJlY3JhY2tkb3dubG9hZAbmF== PDF link annotation

  • https://stellarismods.com/wp-content/uploads/2022/12/Windpro_28_Crack_BEST.pdfIn PDF document text
  • http://applebe.ru/2022/12/01/index-of-flv-porn/In PDF document text
  • https://jasaborsumurjakarta.com/wp-content/uploads/2022/12/codigo_producto_sims_4_origin_crack.pdfIn PDF document text
  • https://www.aussnowacademy.com/gateway-b2-workbook-answer-unit-6/In PDF document text
  • https://instafede.com/wp-content/uploads/2022/12/grid_2_crack_steam_apidll_21.pdfIn PDF document text
  • https://lavavajillasportatiles.com/sema-experience-v12-0-torrent-download-2021-rar/In PDF document text
  • http://shoplidaire.fr/?p=228136In PDF document text
  • http://www.kiwitravellers2017.com/wp-content/uploads/2022/12/daigdru.pdfIn PDF document text
  • https://conexionfit.net/wp-content/uploads/2022/12/hanglen.pdfIn PDF document text
  • https://www.scoutgambia.org/ez-check-printing-full-version-download-repack/In PDF document text
  • http://esecuritys.com/flyovers/isnare.customizations.oppressing?zg93bmxvywr8z1oxtvdgegizedhnvfkyt1rnmk1qstrobng4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda=bmf0axzlaw5zdhj1bwvudhntyxnjagluzxnvznr3yxjly3jhy2tkb3dubg9hzabmf==In PDF document text
  • http://dejavu.sourceforge.netIn extracted file (stream_003_off000023a2.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_003_off000023a2.bin)

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