Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d5429d689aab11…

MALICIOUS

PDF

33.7 KB Created: 2021-06-27 05:00:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9a014e881b60d15668e9ac1bd669911d SHA-1: 25fe857d6cc42aedf4c710d1562d97a627e3cb38 SHA-256: 11d5429d689aab113fb0b22ee08590efdb76665ccae14547f08d08ebbaf15a74
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including a prominent one to 'netcdn.co' disguised as a game hack. This heuristic firing, combined with the ML classifier's high confidence, indicates a malicious lure designed to trick users into downloading potentially harmful content or visiting a phishing site. The document body also contains numerous URLs related to game cheats and hacks, reinforcing the lure's theme.

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.co/app/431946152/unicorn-cheat-in-roblox-game-hack PDF link annotation
    • http://energyx.com.tw/image/data/files/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/free-noob-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/boku-no-roblox-remastered-free-account_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/roblox-shirt-maker-free-shipping_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/robux-hack-2021-pc_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://energyx.com.tw/image/data/files/free-roblox-clothes-boy_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_off00002e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7F 21980 bytes
SHA-256: 0367ba80bfa78b7025908c9390d2a54b273910b39e64a5da58f0011e9cf6dce7
font_01_sfnt_off00005f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3C 18876 bytes
SHA-256: 20ed7d97a205e9f517678dc13a25a81adad01d8dfb528975989c75b7c805e90e

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