Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c7b8b3873e9639a…

MALICIOUS

PDF

44.4 KB Created: 2021-06-02 10:31:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e6f25029344292318d54316ec87027aa SHA-1: c6b5c9e5cd80d87d9a5ad2521c7ed7b55f0de87d SHA-256: 1c7b8b3873e9639ade5cbba700f52b917887b3cc851e07d8973b1188fb1f0ae1
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA lure to deceive users into downloading a payload from the provided external URL. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple URLs associated with game hacks further supports a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded URLs indicate a clear intent to lead the user to download potentially harmful content.

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.xyz/app/431946152/gross-roblox-hacks-game-hack
    • http://szekelymozes.ro/images/roblox-arsenal-hack_GM431946152.pdf
    • http://szekelymozes.ro/images/coin-master-hack-ios_GM406889139.pdf
    • http://szekelymozes.ro/images/coin-master-apk-hack-2021-ios_GM406889139.pdf
    • http://szekelymozes.ro/images/minecraft-xray-hack_GM479516143.pdf
    • http://szekelymozes.ro/images/free-robux-hack-2021_GM431946152.pdf
    • http://szekelymozes.ro/images/coin-master-free-spins-without-human-verification_GM406889139.pdf
    • http://szekelymozes.ro/images/how-to-hack-a-minecraft-server_GM479516143.pdf
    • http://szekelymozes.ro/images/free-robux-without-verification_GM431946152.pdf
    • http://szekelymozes.ro/images/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://szekelymozes.ro/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://szekelymozes.ro/images/coin-master-free-coins-2021_GM406889139.pdf
    • http://szekelymozes.ro/images/free-old-roblox-accounts_GM431946152.pdf
    • http://szekelymozes.ro/images/minecraft-app-free-download_GM479516143.pdf
    • http://szekelymozes.ro/images/how-to-get-free-spins-for-coin-master_GM406889139.pdf
    • http://szekelymozes.ro/images/coin-master-free-shield_GM406889139.pdf
    • http://szekelymozes.ro/images/free-coin-master-spins-link-facebook_GM406889139.pdf
    • http://szekelymozes.ro/images/coin-master-free-card-link-today_GM406889139.pdf
    • http://szekelymozes.ro/images/tiktok-free-videos_GM835599320.pdf
    • http://szekelymozes.ro/images/coin-master-free-spins-cheat-codes_GM406889139.pdf
    • http://szekelymozes.ro/images/how-to-get-free-fans-on-tiktok_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e36.bin
66190146d34f8be9213cebd94e32ac585ccc4450559311c44f66c4b1bd3117ac		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E36 27016 bytes
font_01_sfnt_off00008b0f.bin
af38d4d87147a090dd133b9e3eacb38d5e0e3054b421c0db6d5d621b5bc65c87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0F 18184 bytes

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