Malicious PDF — malware analysis report

Static analysis result for SHA-256 793dffb8eb02c612…

MALICIOUS

PDF

44.0 KB Created: 2021-06-10 15:22:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9970328be1da835f3452b39c3267791e SHA-1: f8640724c4bbe39c5bcb6635d9d6851b81ce75a6 SHA-256: 793dffb8eb02c612a1a0929dc440cc95d080a0b7b9f88b88c8c55ca3023d0be2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents itself as a guide to hacking games like Roblox, likely as a lure to trick users into downloading a malicious payload. The presence of a fake CAPTCHA heuristic strongly suggests a social engineering tactic to bypass security measures or trick users into executing further steps. While no scripts were directly extracted, the embedded URLs point to potential download locations for secondary payloads, indicating a downloader or droppper functionality.

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/como-hackear-roblox-cuentas-game-hack
    • http://deyuan-pc.com.tw/images/roblox-studio-free_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/free-robux-rewards_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/roblox-hack-game_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/minecraft-hacked-client-112-2_GM479516143.pdf
    • http://deyuan-pc.com.tw/images/hacks-to-get-free-robux_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/free-roblox-dominus_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/minecraft-fly-hack_GM479516143.pdf
    • http://deyuan-pc.com.tw/images/hack-coin-master-for-free_GM406889139.pdf
    • http://deyuan-pc.com.tw/images/free-robux-hacks-no-verification_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdf
    • http://deyuan-pc.com.tw/images/how-to-exploit-roblox_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/is-there-a-free-version-of-minecraft_GM479516143.pdf
    • http://deyuan-pc.com.tw/images/is-free-robux-real_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/roblox-egg-farm-simulator-hack_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/free-robux-reddit_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/how-to-get-minecraft-realms-for-free_GM479516143.pdf
    • http://deyuan-pc.com.tw/images/coin-master-hacks_GM406889139.pdf
    • http://deyuan-pc.com.tw/images/coin-master-free-spins-coins_GM406889139.pdf
    • http://deyuan-pc.com.tw/images/roblox-hacked-accounts-list_GM431946152.pdf
    • http://deyuan-pc.com.tw/images/roblox-password-hacker_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f88.bin
6dc282f035dd098453df13e78b682282944e3b03822cf23a51726c5e890f41cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F88 24748 bytes
font_01_sfnt_off0000881a.bin
67720ee9f5a5eebceec371a064e2d4cce0e10714d662bf66315ec18b6706cf55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x881A 18684 bytes

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