Malicious PDF — malware analysis report

Static analysis result for SHA-256 2878c52691caa03a…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 06:07:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e0712169edb9c61447bb3cbf254661b6 SHA-1: ebd6021a56886a30d5a13cc766815fae0da8d066 SHA-256: 2878c52691caa03ae2fdcbc5594772a23f3b0fc31688e949128dece00422b07e
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/free-roblox-accounts-generator-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/robux-free-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-promo-codes-roblox-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/gratis-und-sicher-free-robux-bekommen-hacking_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-adopt-me-hack-money-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-how-to-report-a-hacker_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-roblox-accounts-november-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-tickets-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-crown-roblox_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_off00002dd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD6 22068 bytes
SHA-256: bc5467ae235312f82a57a3c68ec1813d231cedf5330318b3dc5017a272544794
font_01_sfnt_off00005ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA8 18896 bytes
SHA-256: ee8fb002bcaaf8718cc01282f8600ef61b633d8a753509fe17ddb4e6784a3394

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