Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b4403c3d8005a24…

MALICIOUS

PDF

34.1 KB Created: 2021-06-25 04:23:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 986b0d54a786fec6564bb4a6d133f100 SHA-1: b6f72efe1f8fdd2ff3ae47713dae57ff54e72189 SHA-256: 9b4403c3d8005a24486c65af4ff098cd0824dc0a87553718f6dbbc8efc049054
82 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a malicious lure, presenting a fake CAPTCHA to deceive users into downloading a payload. The embedded URL, http://netcdn.co/app/431946152/roblox-shinobi-life-hack-2021-game-hack, likely serves as the distribution point for this payload. The document's content and heuristics strongly suggest an attempt to trick users into executing further malicious code.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-shinobi-life-hack-2021-game-hack
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/get-free-food-in-coin-master_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-2021k-robux-no-password-obby_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-free-robux-generator_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-roblox-hack-us_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-hack-coin-master-with-root_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/sentinel-exploit-roblox-free_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/minecraft-free-online_GM479516143.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-spin-coin-master-new-link_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/op-rewards-free-robux_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-apk_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-minecraft-server_GM479516143.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-free-spin-game_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/hack-emote-dance-roblox_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-freebies_GM406889139.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-profile_GM431946152.pdf
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-free-skin_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f49.bin
2fa768a8548cdb123d4cff6aaa154454495a4a07eab58bd4a3ebb4acfe68b651
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F49 21772 bytes
font_01_sfnt_off00005f2d.bin
1fa338c0cc3f911264297da4f2433c27038e5fd3623521da2e7d696fa962b06c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2D 19344 bytes