Malicious PDF — malware analysis report

Static analysis result for SHA-256 868c1dc449903181…

MALICIOUS

PDF

41.5 KB Created: 2021-05-20 07:01:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cd1d1f34ba231cabc81fdac723a38835 SHA-1: af5f458072055bc67837a04019aaf972cfaa66e9 SHA-256: 868c1dc449903181b0d0752dd6c173ee6c736eca6c02ff8654990c87eb238192
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA and contains numerous links to game hacking websites, indicating a lure to download potentially malicious software. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports this assessment. The primary goal appears to be directing users to download unauthorized game modification tools.

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-hack-mod-apk-unlimited-spins-game-hack
    • http://gops.pruszczgdanski.pl/images/how-to-hack-roblox-accounts_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/free-robux-android_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/give-me-robux-now_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/coin-master-free-spins-daily_GM406889139.pdf
    • http://gops.pruszczgdanski.pl/images/how-can-i-get-free-robux_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/roblox-games-com-free_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/how-to-generate-free-coin-master-spin_GM406889139.pdf
    • http://gops.pruszczgdanski.pl/images/real-roblox_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/apps-to-get-free-robux_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/earnrobux_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/free-robux-generator-no-verification_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/roblox-hack-site_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/coin-master-pet-food-free_GM406889139.pdf
    • http://gops.pruszczgdanski.pl/images/oprewards-free-robux_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/what-games-give-you-robux_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/free-robux-offers_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/coin-master-stop-attack-hack_GM406889139.pdf
    • http://gops.pruszczgdanski.pl/images/free-robux-generator-for-kids_GM431946152.pdf
    • http://gops.pruszczgdanski.pl/images/rewardex-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046c0.bin
3a7baa7ab3c17537698af3cd9eea1ed63b0e38ea2f79b84afc190e0f88c81408		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46C0 24408 bytes
font_01_sfnt_off00007ebe.bin
18de0d3395175a01182e22f6397e1dac7410efb25a7e1b1cdc961642bba379c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBE 18584 bytes

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