Malicious PDF — malware analysis report

Static analysis result for SHA-256 7902bcfce022437a…

MALICIOUS

PDF

44.7 KB Created: 2021-05-15 23:38:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 422178e17fdf1c21a65a177cc8c6df9b SHA-1: ac3b3dbdd255ffc844da05bf9eb46b5116293b9d SHA-256: 7902bcfce022437ab9c8bf381c77240b92f48cf7001723ac176a933244c5ff48
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into believing they need to verify their humanity to download something. It also embeds external URLs, one of which is directly linked to a 'free Robux hack', suggesting a social engineering tactic to encourage downloads. The ML classifier also flagged this PDF as malicious with high confidence.

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 https://netcdn.xyz/app/431946152/free-robux-hack-2021-game-hack
    • http://neumann.fr/images/coin-master-apk-hack-download_GM406889139.pdf
    • http://neumann.fr/images/earn-free-robux-today_GM431946152.pdf
    • http://neumann.fr/images/roblox-images_GM431946152.pdf
    • http://neumann.fr/images/roblox-rewards-robux_GM431946152.pdf
    • http://neumann.fr/images/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • http://neumann.fr/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • http://neumann.fr/images/coin-master-mod-apk-free-download-for-android_GM406889139.pdf
    • http://neumann.fr/images/free-24-7-minecraft-server_GM479516143.pdf
    • http://neumann.fr/images/coin-master-free-link-facebook_GM406889139.pdf
    • http://neumann.fr/images/you-promised-my-son-free-robux_GM431946152.pdf
    • http://neumann.fr/images/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://neumann.fr/images/roblox-promo-codes-for-free-robux_GM431946152.pdf
    • http://neumann.fr/images/coin-master-attack-madness-hack_GM406889139.pdf
    • http://neumann.fr/images/robux-cheat_GM431946152.pdf
    • http://neumann.fr/images/coin-master-hack-ios-10_GM406889139.pdf
    • http://neumann.fr/images/free-spins-october-28-2021-coin-master_GM406889139.pdf
    • http://neumann.fr/images/robloxfun-com-generator_GM431946152.pdf
    • http://neumann.fr/images/how-to-get-free-robux-on-iphone_GM431946152.pdf
    • http://neumann.fr/images/uprobuxcom-free-robux_GM431946152.pdf
    • http://neumann.fr/images/minecraft-servers-that-allow-hacks_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004836.bin
e61ef59632e19d2e0b2070c8eeed943b9f0a54e79a64f40799e614a4d0037a3d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4836 29652 bytes
font_01_sfnt_off00008ae7.bin
b2e74e066e927f416452387fe7118a02e4882588ce64a473b0bf6318b488dee0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE7 18816 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.