Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a6b324de6ddc429…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 02:48:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 97d2c0a885ade9cef093a5b1cd600075 SHA-1: b1a76413a8c9a18990a1f4e1e148a1260450dd59 SHA-256: 6a6b324de6ddc4299a87470f5e8c43f090c8d2093600e1f24aaa688dcaa1a6d2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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://netcdn.tw/app/431946152/7-year-old-roblox-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/free-robux-hack-on-robux-store_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-blood-of-iron-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-hack-funnehcake-on-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-dead-winter-infinity-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-is-a-scam_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/epic-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-on-apple-computer_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-frog-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-hack-roblox-carlos-admin-house_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-money-on-roblox-games_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-gift-catd-codes-list_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-roblox-scripters_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-thumbnail-in-roblox-studio_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3019 22732 bytes
SHA-256: 113538b906f8935cc1e9b421318cface320488a335eec7d90902c690eda74604
font_01_sfnt_off0000631e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631E 18880 bytes
SHA-256: 85e4e9e0d9805ef16fec6cb3c84a8d690b5a293c59c21ae1973f218ecc3fb6d4

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