Malicious PDF — malware analysis report

Static analysis result for SHA-256 328d17fd9ccae36f…

MALICIOUS

PDF

44.3 KB Created: 2021-06-10 23:35:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: aced074f019ad884a6959b20e3b3d407 SHA-1: acae21f42135dde9d2ece530b2a313018192282e SHA-256: 328d17fd9ccae36f27c50ab28744cfca0a85d5b24b6b2069a6d159edead06aad
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA and a call-to-action to download content related to game hacking, which is a common lure for malware distribution. The embedded URL points to a resource that likely serves as a download link for a malicious payload. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/how-to-hack-the-games-of-roblox-to-have-visits-game-hack
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/tryrbx-site-free-robux_GM431946152.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/free-executors-for-roblox_GM431946152.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/is-roblox-studio-free_GM431946152.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/is-windows-10-minecraft-free_GM479516143.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/minecraft-hacks-18-9_GM479516143.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/free-robux-no-apps_GM431946152.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/robux-hack-no-human-verification_GM431946152.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/free-2021-robux_GM431946152.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/rbl-gg-free-robux_GM431946152.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/how-to-get-free-roblox-items-2021-febuary_GM431946152.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-in-roblox-2021-easy_GM431946152.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/can-you-really-hack-coin-master_GM406889139.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/free-robux-discord-bot_GM431946152.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/hack-coin-master-game-download_GM406889139.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/wurst-112_GM479516143.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/coin-master-spin-free_GM406889139.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/minecraft-windows-free_GM479516143.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/free-coin-master-credit_GM406889139.pdf
    • https://balibalotour.com/new/public/ckfinder/userfiles/files/daily-coin-master-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000504f.bin
e58a932b0e2e49c3bed4de086309c2508d806d3322bc4a35387f57e72fdcb6c0
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x504F 24244 bytes
font_01_sfnt_off000087b2.bin
420104e41302e2ac983ec78abb990dfcd2adc57563a6e551443a96aa40d4527e
pdf-font-stream PDF embedded font (sfnt) at offset 0x87B2 19244 bytes