Malicious PDF — malware analysis report

Static analysis result for SHA-256 919dafa04627e006…

MALICIOUS

PDF

43.7 KB Created: 2021-05-13 04:31:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a674a055515c640cd3325b40cfd349cb SHA-1: ae91ad8cb849683e4c36e848ddfd8737cd20bf19 SHA-256: 919dafa04627e006813fd3aff579f92334c4e4b31cce5c0ad6c7cd8b8e09feb0
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document displays a fake CAPTCHA and a call-to-action button, attempting to trick the user into clicking a link. The embedded URI and numerous other URLs point to sites offering free game-related items or hacks, a common lure for malicious downloads or phishing. The ML classifier strongly indicates maliciousness, and the presence of external URIs suggests the document is designed to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/roblox-sign-in-free-game-hack
    • http://eurocomes.com/images/free-minecraft-java-edition_GM479516143.pdf
    • http://eurocomes.com/images/free-robux-codes-generator-no-verification_GM431946152.pdf
    • http://eurocomes.com/images/free-robux-without-human-verification-2021_GM431946152.pdf
    • http://eurocomes.com/images/free-free-robux_GM431946152.pdf
    • http://eurocomes.com/images/get-free-coin-master-coins_GM406889139.pdf
    • http://eurocomes.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://eurocomes.com/images/free-minecraft-client_GM479516143.pdf
    • http://eurocomes.com/images/minecraft-free-trial_GM479516143.pdf
    • http://eurocomes.com/images/free-coins-coin-master_GM406889139.pdf
    • http://eurocomes.com/images/withdraw-robux_GM431946152.pdf
    • http://eurocomes.com/images/free-robux-picture_GM431946152.pdf
    • http://eurocomes.com/images/roblox-free-robux-hack_GM431946152.pdf
    • http://eurocomes.com/images/bloxawards-com-earn-free-robux_GM431946152.pdf
    • http://eurocomes.com/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdf
    • http://eurocomes.com/images/free-robux-codes_GM431946152.pdf
    • http://eurocomes.com/images/free-robux-on-iphone_GM431946152.pdf
    • http://eurocomes.com/images/roblox-free-robux-no-verification_GM431946152.pdf
    • http://eurocomes.com/images/free-unlimited-coins-for-coin-master_GM406889139.pdf
    • http://eurocomes.com/images/coin-master-mod-version-free-download_GM406889139.pdf
    • http://eurocomes.com/images/how-to-get-free-cards-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b72.bin
f33dae879f2cdef76a2adfcaeca9e086bad023035bd698432302e0072c7e00ff		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B72 26168 bytes
font_01_sfnt_off00008867.bin
0c6b136d59097e1a689858911fb48c20bb16f920676ba78856ab345b09e68bef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8867 18356 bytes

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