Malicious PDF — malware analysis report

Static analysis result for SHA-256 acdfff69e3ce4030…

MALICIOUS

PDF

41.1 KB Created: 2021-05-17 01:34:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e5bd662c9a287e1f58cde5ad697acacb SHA-1: 6d4168e1c40e8a9d6839b3efab3974b0210ac7b4 SHA-256: acdfff69e3ce4030e83935bc8c7fa876695106d5796e8340f5faf7982982b195
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, prompting the user to click a link for game cheats. The embedded URL, https://netcdn.xyz/app/431946152/rbx-earn-game-hack, likely leads to a malicious download or phishing page. The document's structure and content suggest it is part of a social engineering campaign to trick users into executing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/rbx-earn-game-hack
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/2021-free-spins-coin-master_GM406889139.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-roblox-accounts-generator_GM431946152.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/static-moonactive_GM406889139.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-hack-roblox_GM431946152.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/rblx-gg-free-robux_GM431946152.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/coin-master-hack-spins-app_GM406889139.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/rare-free-links-to-coin-master_GM406889139.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/minecraft-java-edition-download-free_GM479516143.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-pe_GM479516143.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/minecraft-realms-free_GM479516143.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-robux-generator-no-verification_GM431946152.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-change-username-on-roblox-for-free_GM431946152.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/free-account-roblox-2021_GM431946152.pdf
    • http://www.r2rfurniture.com/uploaded_files/userfiles/files/how-to-get-100-robux-for-free_GM431946152.pdf
    • https://discord
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004748.bin
0d4ec240abfea315695926caf0df3e3113477e83e8a8e0e93e99ec5b3af90e15		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4748 24592 bytes
font_01_sfnt_off00007f99.bin
5d96850db391640a789f6b9575203aa6a74b29f0cc3cc6ce507ef88e04be182a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F99 17796 bytes

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