Malicious PDF — malware analysis report

Static analysis result for SHA-256 5401cce007b8cb84…

MALICIOUS

PDF

47.0 KB Created: 2021-05-13 06:08:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 708d8f779fbf7ca03a4e0d7ab36da7d7 SHA-1: e4c85847b5e34a50625b843aa6aed9a964c8b41e SHA-256: 5401cce007b8cb842a8e5161d51683e91b812a8996ea24cd1d4fd12736903dc1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick the user into interacting with a malicious link. The embedded URL, https://netcdn.xyz/app/431946152/microsoft-roblox-rewards-game-hack, likely leads to a second-stage payload download. The document body and numerous other URLs suggest a theme of game-related rewards or hacks, a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.xyz/app/431946152/microsoft-roblox-rewards-game-hack
    • http://ghhs.com.my/images/hack-coin-master-iphone_GM406889139.pdf
    • http://ghhs.com.my/images/gamehunters-club-coin-master_GM406889139.pdf
    • http://ghhs.com.my/images/claim-free-robux-button_GM431946152.pdf
    • http://ghhs.com.my/images/free-online-games-like-minecraft_GM479516143.pdf
    • http://ghhs.com.my/images/coin-master-hack-apk-download-2021_GM406889139.pdf
    • http://ghhs.com.my/images/android-coin-master-hack-2021_GM406889139.pdf
    • http://ghhs.com.my/images/daily-coin-master-free-spin-link_GM406889139.pdf
    • http://ghhs.com.my/images/microsoft-free-robux_GM431946152.pdf
    • http://ghhs.com.my/images/real-coin-master-hack_GM406889139.pdf
    • http://ghhs.com.my/images/coin-master-free-coins-and-spins-link_GM406889139.pdf
    • http://ghhs.com.my/images/free-free-robux_GM431946152.pdf
    • http://ghhs.com.my/images/coin-master-hack-online-pc_GM406889139.pdf
    • http://ghhs.com.my/images/free-robux-generator_GM431946152.pdf
    • http://ghhs.com.my/images/free-roblox-cards-pin-number_GM431946152.pdf
    • http://ghhs.com.my/images/how-can-i-play-minecraft-for-free_GM479516143.pdf
    • http://ghhs.com.my/images/free-robux-codes-2021_GM431946152.pdf
    • http://ghhs.com.my/images/coin-master-free-spins-2-5-2021_GM406889139.pdf
    • http://ghhs.com.my/images/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • http://ghhs.com.my/images/coin-master-hack-without-downloading-apps_GM406889139.pdf
    • http://ghhs.com.my/images/free-coins-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000485d.bin
9c96b1d53a18d97e757046dfc3677ad6d5419b2b15a730971b52bc2a2f39de98		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x485D 26796 bytes
font_01_sfnt_off00008654.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8654 5696 bytes
font_02_sfnt_off00009365.bin
885cbd3f72e53b67117bb4048e91371d45fd893deaab7f6141eb78c54bb681fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9365 18772 bytes

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