Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe06a455502fa82…

MALICIOUS

PDF

44.4 KB Created: 2021-06-09 12:18:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ebe5c3fd13341ea8b701bf392fdf2f48 SHA-1: 72d2c66fd425d78a30d0d9beda920a3ea9f08d61 SHA-256: ebe06a455502fa82492f7f7082a8eb5bd5013b7eafaa7ef2437fee2883a98db2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document displays a fake CAPTCHA to lure the user into interacting with a malicious link, likely leading to a second-stage download or phishing attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment. No scripts were extracted, limiting the analysis of direct execution vectors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9890

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/free-robux-tee-shirt-game-hack
    • http://szekelymozes.ro/images/minecraft-hacked-apk_GM479516143.pdf
    • http://szekelymozes.ro/images/free-spins-coin-master-apple_GM406889139.pdf
    • http://szekelymozes.ro/images/roblox-username-change-free_GM431946152.pdf
    • http://szekelymozes.ro/images/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdf
    • http://szekelymozes.ro/images/coin-master-game-free_GM406889139.pdf
    • http://szekelymozes.ro/images/avatar-roblox-game_GM431946152.pdf
    • http://szekelymozes.ro/images/how-do-u-get-free-robux_GM431946152.pdf
    • http://szekelymozes.ro/images/minecraft-free-download-laptop_GM479516143.pdf
    • http://szekelymozes.ro/images/how-to-get-free-fans-on-tiktok_GM835599320.pdf
    • http://szekelymozes.ro/images/free-minecraft-servers-to-join_GM479516143.pdf
    • http://szekelymozes.ro/images/roblox-login-hack_GM431946152.pdf
    • http://szekelymozes.ro/images/how-do-we-get-free-robux_GM431946152.pdf
    • http://szekelymozes.ro/images/without-pokemon-go-free-promo-codes_GM1094591345.pdf
    • http://szekelymozes.ro/images/apps-to-get-free-robux_GM431946152.pdf
    • http://szekelymozes.ro/images/roblox-eclipsis-hack_GM431946152.pdf
    • http://szekelymozes.ro/images/coin-master-hack-mod-apk-free-download_GM406889139.pdf
    • http://szekelymozes.ro/images/daily-free-spin-and-coin_GM406889139.pdf
    • http://szekelymozes.ro/images/how-to-use-free-gamepass-scripts-in-roblox_GM431946152.pdf
    • http://szekelymozes.ro/images/free-robux-codes-2021_GM431946152.pdf
    • http://szekelymozes.ro/images/games-that-can-be-hacked_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005237.bin
efd38ff2d812b65525e893679ac3bb49c92f76cd4f412b0a819ce1807c82cdf4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5237 24728 bytes
font_01_sfnt_off00008aca.bin
6ded35ba9efa1431bd670cf1442f8dfc7b8ca85e8491bd984e20ea5eeec3bd35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACA 18404 bytes

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