Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef268336a4c0c9fc…

MALICIOUS

PDF

45.8 KB Created: 2021-06-11 06:11:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 82d09818e16e5764eeef0f5412db423c SHA-1: 5790a488889c7c03c8a0049004aaad6fd33ac58c SHA-256: ef268336a4c0c9fce4b884217cd969f1c89e50aac35cd62308278ec618cd4759
82 Risk Score

Malware Insights

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

The sample is a PDF document that displays a fake CAPTCHA to trick the user into downloading a payload from an external URL. The ML classifier strongly indicated maliciousness, and the presence of multiple links to game-related hacks suggests a lure for users seeking cheats or exploits. No scripts were extracted, but the document's structure and embedded URLs point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/roblox-teleport-hack-2021-game-hack
    • http://dismarinamt.com.br/images/hacks-to-get-free-robux_GM431946152.pdf
    • http://dismarinamt.com.br/images/redeem-code-roblox-free_GM431946152.pdf
    • http://dismarinamt.com.br/images/free-roblox-clothes-for-your-avatar_GM431946152.pdf
    • http://dismarinamt.com.br/images/how-to-earn-free-robux_GM431946152.pdf
    • http://dismarinamt.com.br/images/robloxjailbreakfreehacks_GM431946152.pdf
    • http://dismarinamt.com.br/images/coin-master-hack-twitter_GM406889139.pdf
    • http://dismarinamt.com.br/images/roblox-gift-card-for-free_GM431946152.pdf
    • http://dismarinamt.com.br/images/free-roblox-toy-codes-not-used_GM431946152.pdf
    • http://dismarinamt.com.br/images/coin-master-spins-for-free_GM406889139.pdf
    • http://dismarinamt.com.br/images/the-northern-frontier-script-roblox-hack_GM431946152.pdf
    • http://dismarinamt.com.br/images/free-roblox-intros_GM431946152.pdf
    • http://dismarinamt.com.br/images/tiktok-followers-for-free_GM835599320.pdf
    • http://dismarinamt.com.br/images/free-spins-coin-master_GM406889139.pdf
    • http://dismarinamt.com.br/images/free-roblox-dominus_GM431946152.pdf
    • http://dismarinamt.com.br/images/hack-master-coin_GM406889139.pdf
    • http://dismarinamt.com.br/images/admin-commands-roblox-hack_GM431946152.pdf
    • http://dismarinamt.com.br/images/blox-supply-free-robux_GM431946152.pdf
    • http://dismarinamt.com.br/images/freer-pro-tiktok-fans_GM835599320.pdf
    • http://dismarinamt.com.br/images/roblox-its-free_GM431946152.pdf
    • http://dismarinamt.com.br/images/how-too-hack-in-superhero-simulator-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ea5.bin
58e35b2d4cb6c83a119145558416d536b9eb48f941d0ff20f6fbea8e9405c553		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EA5 28116 bytes
font_01_sfnt_off00008e97.bin
db68332d857d5491e456029e0a7a01ac62bb7726e638f6305a9ee78c795bb1e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E97 18864 bytes

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