Malicious PDF — malware analysis report

Static analysis result for SHA-256 d15a3276bf788201…

MALICIOUS

PDF

42.2 KB Created: 2021-05-17 12:14:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 934cc620bcd7e50c696c0d6ceed41bce SHA-1: a1b9aaba77c45868da5910c2d24520a0a9127480 SHA-256: d15a3276bf788201d9ffa5eea80f66d8c322932615dc0c5ddf168f07c74c1c0b
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 to trick the user into clicking a link. This is a common social engineering tactic to lead users to download malicious content or visit phishing sites. Multiple external URLs were extracted, suggesting a download or redirection attempt.

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/431946152/huskybucks.com-free-robux-game-hack
    • https://verstricktundzugenaeht.com/images/robux-free-gift-card_GM431946152.pdf
    • https://verstricktundzugenaeht.com/images/how-to-get-a-lot-of-robux_GM431946152.pdf
    • https://verstricktundzugenaeht.com/images/how-to-hack-coin-master-ios_GM406889139.pdf
    • https://verstricktundzugenaeht.com/images/google-roblox-games_GM431946152.pdf
    • https://verstricktundzugenaeht.com/images/coin-master-spin-hack-without-verification_GM406889139.pdf
    • https://verstricktundzugenaeht.com/images/feb-23-2021-free-coin-master-spins_GM406889139.pdf
    • https://verstricktundzugenaeht.com/images/cm-spin-link_GM406889139.pdf
    • https://verstricktundzugenaeht.com/images/minecraft-java-code-free_GM479516143.pdf
    • https://verstricktundzugenaeht.com/images/25-free-spins-coin-master_GM406889139.pdf
    • https://verstricktundzugenaeht.com/images/how-to-get-free-robux-on-mobile_GM431946152.pdf
    • https://verstricktundzugenaeht.com/images/free-roblox-girl-hair-not-a-model_GM431946152.pdf
    • https://verstricktundzugenaeht.com/images/coin-master-game-android-free-download_GM406889139.pdf
    • https://verstricktundzugenaeht.com/images/roblox-robux-page_GM431946152.pdf
    • https://verstricktundzugenaeht.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • https://verstricktundzugenaeht.com/images/free-robux-hacker-us_GM431946152.pdf
    • https://verstricktundzugenaeht.com/images/i-robux_GM431946152.pdf
    • https://verstricktundzugenaeht.com/images/best-way-to-get-free-robux_GM431946152.pdf
    • https://verstricktundzugenaeht.com/images/optifine-pe_GM479516143.pdf
    • https://verstricktundzugenaeht.com/images/coin-master-jackpot-madness-hack_GM406889139.pdf
    • https://verstricktundzugenaeht.com/images/coin-master-free-spins-today-daily-links_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004894.bin
f99e94e1c1928b5bb2e7d5e791563c72426e85aa49bffef0ab9d870075bf0181		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4894 24896 bytes
font_01_sfnt_off00008158.bin
6988f73f4b0746331af176c61d8a6d12afd54d9d4021c1ba8a7576897a1c52a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8158 18688 bytes

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