Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e9555fe9bc0380…

MALICIOUS

PDF

41.4 KB Created: 2021-05-18 03:41:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 05dc93b7def44a4c2129a629b8a86da9 SHA-1: 7443ad52b6c57f5ec918fe422a247454585c149b SHA-256: 32e9555fe9bc0380642115a2022e7b19b9592df0127e2f0605a56d518a16bcd6
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt, a common social engineering tactic to trick users into clicking malicious links. The embedded URL and numerous other links point to sites offering game hacks and cheats, further supporting the lure. The ML classifier also strongly indicated maliciousness.

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-using-cheat-engine-game-hack
    • https://gryps.de/images/rbx-gg-free-robux_GM431946152.pdf
    • https://gryps.de/images/minecraft-hacked-client_GM479516143.pdf
    • https://gryps.de/images/coin-master-online-free-spin_GM406889139.pdf
    • https://gryps.de/images/free-robux-gift-card_GM431946152.pdf
    • https://gryps.de/images/roblox-system_GM431946152.pdf
    • https://gryps.de/images/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdf
    • https://gryps.de/images/sites-to-get-free-robux_GM431946152.pdf
    • https://gryps.de/images/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • https://gryps.de/images/free-spins-from-coin-master_GM406889139.pdf
    • https://gryps.de/images/how-to-hack-roblox-jailbreak_GM431946152.pdf
    • https://gryps.de/images/www-free-robux-com_GM431946152.pdf
    • https://gryps.de/images/free-robux-hacker-us_GM431946152.pdf
    • https://gryps.de/images/how-to-minecraft-for-free_GM479516143.pdf
    • https://gryps.de/images/robux-no-survey_GM431946152.pdf
    • https://gryps.de/images/coin-master-free-spins-coins_GM406889139.pdf
    • https://gryps.de/images/roblox-april-fools-hack_GM431946152.pdf
    • https://gryps.de/images/how-to-get-free-outfits-on-roblox_GM431946152.pdf
    • https://gryps.de/images/tiktok-minecraft-hacks_GM479516143.pdf
    • https://gryps.de/images/minecraft-free-download-windows_GM479516143.pdf
    • https://gryps.de/images/coin-master-hack-pro_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004782.bin
772cd09fe559bf562fd7dbc668f19cd62c726960eaf178be0ad2e3ef4564277f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4782 24356 bytes
font_01_sfnt_off00007f41.bin
3b07b8a16a0acd97367c7fd615febf830525fa70158f5f56fd277e3c34c2bf5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F41 18356 bytes

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