Malicious PDF — malware analysis report

Static analysis result for SHA-256 216ae054664ce267…

MALICIOUS

PDF

45.0 KB Created: 2021-06-10 17:22:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7ff08102563d4a79af2f355e8025dd8e SHA-1: 6c562e815a9cc7da9a19b31ba1932623ab270dab SHA-256: 216ae054664ce26703d7642d8a1f292b301d0e8208b6a44a998f08fa5283231d
122 Risk Score

Malware Insights

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

The document exhibits characteristics of a malicious lure, including a fake CAPTCHA and a call-to-action button, designed to trick users into downloading further content. The embedded URL points to a resource that likely serves as a download for a malicious payload. The presence of multiple URLs related to game hacks and freebies suggests a scam or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-cruise-ship-tyccon-albatros-free-game-hack
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-pc-hack-tool_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/cone-master_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-pet-food-free_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-coin-master-spins-blog_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/rewards-robux_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/hack-coin-pro-coin-master_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-roblox-video-games_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/toolbox-for-minecraft_GM479516143.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-likes-for-tiktok_GM835599320.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-hack-app_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-gold-cards-free_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-robux-redeem-codes_GM431946152.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/minecraft-hacker-skin_GM479516143.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/free-spins-coins-coin-master_GM406889139.pdf
    • http://www.ankitabrushes.com/uploaded_files/userfiles/files/minecraft-free-version-pc_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005105.bin
1a980fe0b9ed0f3bb8c12f7bdd23a5282d7d7c36f32796e1a403e0ed006bcb80
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5105 25148 bytes
font_01_sfnt_off00008aee.bin
69adbe543ab0788a65b304e92329f8d1c9e0c230e1a8be35b7e85275ca73b175
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEE 19064 bytes