Malicious PDF — malware analysis report

Static analysis result for SHA-256 979b6161ad9582da…

MALICIOUS

PDF

32.5 KB Created: 2021-07-19 11:40:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 29761d57b7f300a08e293a29b614f2ee SHA-1: d49f7bc58891afa5654413c3388a8883b4fb3061 SHA-256: 979b6161ad9582daba80cbe6c188e61aad623862444c69d9941e39f08f24fe0b
82 Risk Score

Malware Insights

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

The PDF document employs a fake CAPTCHA lure to trick users into clicking a link for 'Free Minecraft Capes'. This link redirects to a malicious URL, likely to download a secondary payload. The document's content and the presence of external URLs strongly suggest a phishing or social engineering attack aimed at user interaction and subsequent compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

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 http://netcdn.tw/app/479516143/free-minecraft-capes-game-hack
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/minecraft-xray-hack_GM479516143.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/minecraft-free-download-mac_GM479516143.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/free-robux_GM431946152.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/robux-free-2021_GM431946152.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/minecraft-iphone-free_GM479516143.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/free-spins-coin-master-app_GM406889139.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/free-minecraft-skin-packs_GM479516143.pdf
    • https://www.goldeneye-group.com/uploaded_files/userfiles/files/free-tiktok-followers-no-survey_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c09.bin
0220ed610f628592376c5495d6696514860bb587c4895b57bfac0174488c5216		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C09 22700 bytes
font_01_sfnt_off00005ed1.bin
dedc931f5c8bac627c7a83c769fddbd093390c6d69f02f50ba531346133b4d17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED1 17744 bytes

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