Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad45f41120e9f912…

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 10:57:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: eb648423b23ac7af57338cd0efca307e SHA-1: 569ea0d3e9b6a09964e6e452399329bed1e60c3c SHA-256: ad45f41120e9f912619c4d068cd2f0a3e2c289532ea7550a4735f6158b2de680
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA or human verification prompt, a common lure for users seeking free in-game items or currency. It contains numerous embedded URLs pointing to potentially malicious PDF files hosted on external domains, suggesting a phishing or malware distribution campaign. The ML classifier also flagged this PDF as malicious with high confidence.

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/free-coins-for-coin-master-blogger-game-hack
    • http://peche-madagascar.com/images/free-robux-no-download_GM431946152.pdf
    • http://peche-madagascar.com/images/free-robux-for-free_GM431946152.pdf
    • http://peche-madagascar.com/images/how-to-get-free-robux-generator_GM431946152.pdf
    • http://peche-madagascar.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://peche-madagascar.com/images/coin-master-34-4-hack-download_GM406889139.pdf
    • http://peche-madagascar.com/images/how-to-get-free-skins-in-roblox_GM431946152.pdf
    • http://peche-madagascar.com/images/minecraft-java-account-free_GM479516143.pdf
    • http://peche-madagascar.com/images/more-robux_GM431946152.pdf
    • http://peche-madagascar.com/images/free-premium-roblox_GM431946152.pdf
    • http://peche-madagascar.com/images/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • http://peche-madagascar.com/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
    • http://peche-madagascar.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://peche-madagascar.com/images/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://peche-madagascar.com/images/play-roblox-for-free-on-google_GM431946152.pdf
    • http://peche-madagascar.com/images/easy-coin-master-hack_GM406889139.pdf
    • http://peche-madagascar.com/images/robux-free-gift-card_GM431946152.pdf
    • http://peche-madagascar.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdf
    • http://peche-madagascar.com/images/coin-master-heaven-free-daily-spins_GM406889139.pdf
    • http://peche-madagascar.com/images/free-cheat-codes-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_off00004802.bin
c8376a8cd7dd3c5108cdca218cc901afd060ca18d5260ad4b4a3518e9c1aef35		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4802 24908 bytes
font_01_sfnt_off0000819c.bin
525699ae71861fffeab431a07c950b4914d38a871fb98becad0e0bea9ac3f1df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x819C 18288 bytes

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