Malicious PDF — malware analysis report

Static analysis result for SHA-256 460de2fd642fad27…

MALICIOUS

PDF

41.5 KB Created: 2021-05-16 12:41:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f5193a276105ce10457e79daea5e4092 SHA-1: 220369ff14d49501cda9342cddbbbb7e5c8246d3 SHA-256: 460de2fd642fad279f8c9efcb2bf9adbd71255f87028480eaa0753028cc3c92f
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA to trick the user into interacting with a malicious link, likely leading to a second-stage download. The presence of multiple URLs associated with game-related lures suggests a phishing or scam campaign. No scripts were extracted, limiting the analysis of the exact payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-no-download-app-but-play-for-free-game-hack
    • http://steklofara.com.ua/images/free-magical-chest-coin-master_GM406889139.pdf
    • http://steklofara.com.ua/images/com-roblox_GM431946152.pdf
    • http://steklofara.com.ua/images/free-2021-robux_GM431946152.pdf
    • http://steklofara.com.ua/images/free-coins-coin-master-2021_GM406889139.pdf
    • http://steklofara.com.ua/images/get-free-spins-for-coin-master_GM406889139.pdf
    • http://steklofara.com.ua/images/www-coin-master_GM406889139.pdf
    • http://steklofara.com.ua/images/daily-free-spins-coin-master-2021_GM406889139.pdf
    • http://steklofara.com.ua/images/free-robux-now_GM431946152.pdf
    • http://steklofara.com.ua/images/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://steklofara.com.ua/images/minecraft-thumbnail-maker-free_GM479516143.pdf
    • http://steklofara.com.ua/images/robux-no-survey_GM431946152.pdf
    • http://steklofara.com.ua/images/free-robux-generator-2021_GM431946152.pdf
    • http://steklofara.com.ua/images/hack-to-protect-village-on-coin-master_GM406889139.pdf
    • http://steklofara.com.ua/images/how-do-you-get-roebucks-for-free_GM431946152.pdf
    • http://steklofara.com.ua/images/i-want-free-robux_GM431946152.pdf
    • http://steklofara.com.ua/images/minecraft-pe-016-0-apk-download-free_GM479516143.pdf
    • http://steklofara.com.ua/images/boost9-com-roblox-hack_GM431946152.pdf
    • http://steklofara.com.ua/images/daily-free-spin-and-coin_GM406889139.pdf
    • http://steklofara.com.ua/images/free-roblox-toy-codes-2021_GM431946152.pdf
    • http://steklofara.com.ua/images/google-how-do-you-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045f6.bin
fc2c033f75ef0b949099c623164d8d4ecf8ca0ad232dabe9d1158c4c8ddb67af		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45F6 24780 bytes
font_01_sfnt_off00007d4a.bin
d7b6f490b42dcfb2d6122599357b88a3225a96ba620445c96d399f93ea3e3daf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4A 19156 bytes

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