Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2d9e0ad364294fb…

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 07:14:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9565e40499e239bc1f69853e8d0a80a4 SHA-1: 865e8f91a5f7232b2bc7ae15c88fe83b7f97a90e SHA-256: d2d9e0ad364294fb5f7314efb0a5cc7db383804103cb5bc8ef0eecff190eadd5
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA and a download button, aiming to trick the user into downloading an application. It contains an external URI pointing to a Coin Master hack, suggesting a lure for game-related cheats or hacks. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/406889139/coin-master-hack-apk-link-game-hack
    • http://vetmed.fkh.unair.ac.id/repository/roblox-hack-download-pc_GM431946152.pdf
    • http://vetmed.fkh.unair.ac.id/repository/free-roblox-generator_GM431946152.pdf
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-safe_GM431946152.pdf
    • http://www.vetmed.fkh.unair.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdf
    • http://vetmed.fkh.unair.ac.id/repository/free-spins-on-coin-master-app_GM406889139.pdf
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-quiz_GM431946152.pdf
    • http://vetmed.fkh.unair.ac.id/repository/hack-download_GM431946152.pdf
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-free-robux-com_GM431946152.pdf
    • http://www.vetmed.fkh.unair.ac.id/repository/moonactive-free-spins_GM406889139.pdf
    • http://vetmed.fkh.unair.ac.id/repository/how-to-make-clothes-on-roblox-for-free_GM431946152.pdf
    • http://www.vetmed.fkh.unair.ac.id/repository/free-spins-coin-master-links_GM406889139.pdf
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-2021_GM406889139.pdf
    • http://www.vetmed.fkh.unair.ac.id/repository/free-cracked-minecraft-server-hosting_GM479516143.pdf
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-hack-100-working_GM406889139.pdf
    • http://www.vetmed.fkh.unair.ac.id/repository/get-free-coin-master-coins_GM406889139.pdf
    • http://www.vetmed.fkh.unair.ac.id/repository/roblox-skin-free_GM431946152.pdf
    • http://vetmed.fkh.unair.ac.id/repository/hackear-coin-master-2021_GM406889139.pdf
    • http://www.vetmed.fkh.unair.ac.id/repository/robux-com-roblox_GM431946152.pdf
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f77.bin
1603a6bc9aa1f09773c83854e73ed27a36aad845f69930e3c33d3358f506556c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F77 23844 bytes
font_01_sfnt_off000085cf.bin
f939fda97690d6a809d743b342add8ec97984f5e978608423f32dd39679c4d64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85CF 17892 bytes

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