Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd712ccd24f85780…

MALICIOUS

PDF

45.1 KB Created: 2021-06-10 20:55:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 19d930d429bd9e99b05a531b8fe2754f SHA-1: e99635a1a715d192ec9d4164f364c83e3d67d691 SHA-256: cd712ccd24f85780493cf2aed2971782fea90252c83c3dffa177b523533c1e18
82 Risk Score

Malware Insights

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

The PDF document contains a lure for a "Roblox Money Hack" and displays a fake CAPTCHA, indicating an attempt to trick the user into downloading a malicious file. The presence of multiple embedded URLs, including one pointing to a potential executable download, reinforces this malicious intent. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-money-hack-free-download-game-hack
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/get-me-free-robux_GM431946152.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/daily-free-spin-coin-master-link_GM406889139.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-daily-spin-free_GM406889139.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/how-to-get-800-robux-for-free_GM431946152.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/how-to-hack-people-on-roblox_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/free-admin-roblox-codes_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-free-spins-link-today-new_GM406889139.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/unlimited-free-spins-coin-master_GM406889139.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-2021-free-spins_GM406889139.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/minecraft-hacks-pc_GM479516143.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-coins_GM406889139.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/coin-master-com_GM406889139.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/minecraft-free-ios-no-verification_GM479516143.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-robux-instantly_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/sb-game-hacker-coin-master_GM406889139.pdf
    • https://e-learningmin10jakarta.com/__statics/gudangsoal/files/free-avatar-roblox_GM431946152.pdf
    • https://www.e-learningmin10jakarta.com/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f3f.bin
e306f80cf2b55ac73ddae7992d835ac029b4986a3583a6a91e849d5b1677d11e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F3F 26100 bytes
font_01_sfnt_off00008afa.bin
db52b886e8f469cf50bb76960572076fa625a0e75c651f1cad7c82aaa5289e71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFA 19228 bytes

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