Malicious PDF — malware analysis report

Static analysis result for SHA-256 325027ca180370f7…

MALICIOUS

PDF

46.3 KB Created: 2021-06-08 21:59:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d15b78857611c8b46d646e18d49c4eab SHA-1: 661ae47d25fe1b3f6c2084ebce84758e2de55342 SHA-256: 325027ca180370f7590768c27d7e388aeb7557e00e2c2a0c395c11ad7510bcb9
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA to lure users into clicking a malicious link, which is a common social engineering tactic. The embedded URL points to a resource offering game-related cheats, further supporting the lure. No scripts were extracted, and the document body is heavily obfuscated, preventing deeper analysis of its specific payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/redeem-roblox-virtual-item-free-codes-2021-game-hack
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-free-login_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-minecraft-premium-account_GM479516143.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/hack-coin-master-2021-pc_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-support_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/minecraft-free-minecoins_GM479516143.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/cheats-for-ninja-legends-roblox_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-free-robux-website_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-800-robux_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-free-coins-2021_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-rewards-app_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-free-spins-daily_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-hack-spin-generator-tool_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/hack-and-receive-your-free-robux_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-hack-minecraft_GM479516143.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-gold-cards-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000514a.bin
0fda8421d987a3e3cfa1a8782bffa38811796fa4f260949d26a4b46aaf3c0ee3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x514A 27176 bytes
font_01_sfnt_off00008ea9.bin
fa96e8761fd3ce9ee40e55d2950f59cfbe7fc7453a3b5f4e7d516782f3508d06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA9 19508 bytes

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