Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfdfe103fce15dcb…

MALICIOUS

PDF

33.9 KB Created: 2021-07-21 10:18:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e71da68e6b7017f5508863c8844e74f0 SHA-1: 63e1965d2bb220fe4127f6afd894ba4193ae5c0f SHA-256: dfdfe103fce15dcb040a2731ed7e1ae6b45edf734759cca9066346cf0b4c83fe
82 Risk Score

Malware Insights

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

This PDF document employs a fake CAPTCHA lure to entice users into clicking a link for a 'free Minecraft Premium Account'. The primary malicious URL, http://netcdn.tw/app/479516143/free-minecraft-premium-account-game-hack, is embedded within the document body and also appears as an external URI. The document's structure and content strongly suggest a phishing or scam attempt designed to lead users to a potentially malicious download or exploit site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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 http://netcdn.tw/app/479516143/free-minecraft-premium-account-game-hack
    • https://www.wcauk.org/uploads/files/files/create-minecraft-server-free_GM479516143.pdf
    • https://www.wcauk.org/uploads/files/files/free-minecraft-texture-packs_GM479516143.pdf
    • https://www.wcauk.org/uploads/files/files/daily-free-spins-for-coin-master_GM406889139.pdf
    • https://www.wcauk.org/uploads/files/files/free-robux-app_GM431946152.pdf
    • https://www.wcauk.org/uploads/files/files/free-robux-no-verification-2021_GM431946152.pdf
    • https://www.wcauk.org/uploads/files/files/freer-pro-tiktok_GM835599320.pdf
    • https://www.wcauk.org/uploads/files/files/free-robux-redeem-codes_GM431946152.pdf
    • https://www.wcauk.org/uploads/files/files/minecraft-on-computer-free_GM479516143.pdf
    • https://www.wcauk.org/uploads/files/files/free-robux-2021_GM431946152.pdf
    • https://www.wcauk.org/uploads/files/files/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fff.bin
8ea82fab516bd4be0c54f4ae6eace0b38bd0d3def3dd430fcfa0dfa539c9b6a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFF 22792 bytes
font_01_sfnt_off000062c0.bin
d2b91c2a6de84c5c57e6f7a8c0463896f89b33dea675ffd93dbde2c8d35c79e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C0 18264 bytes

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