Malicious PDF — malware analysis report

Static analysis result for SHA-256 466f0349804f8fc2…

MALICIOUS

PDF

44.6 KB Created: 2021-06-09 05:28:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bac82fa4c14d15dc0a0d2400629af028 SHA-1: 35ebad3679481735fc49ddf494f0fe7212e070a1 SHA-256: 466f0349804f8fc2062fad982893b1c82cd6078662b7750fb41bbc27cc0661fd
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA or human verification prompt, a common lure to trick users into downloading further malicious content or executing commands. The presence of multiple URLs, including one pointing to a potentially malicious executable disguised as a PDF, strongly suggests a download or redirection attempt. While no scripts were directly extracted, the PDF structure and embedded URIs indicate a malicious workflow designed to exploit user interaction.

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/complete-an-action-for-free-robux-game-hack
    • http://vagency.us/images/roblox-phantom-forces-credit-hack-rc7_GM431946152.pdf
    • http://vagency.us/images/simplysarc_GM479516143.pdf
    • http://vagency.us/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • http://vagency.us/images/get-free-followers-on-tiktok_GM835599320.pdf
    • http://vagency.us/images/free-obc-in-roblox-2021_GM431946152.pdf
    • http://vagency.us/images/free-minecraft-java-account_GM479516143.pdf
    • http://vagency.us/images/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdf
    • http://vagency.us/images/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdf
    • http://vagency.us/images/free-spin-link-for-coin-master-game_GM406889139.pdf
    • http://vagency.us/images/how-to-make-free-t-shirts-on-roblox_GM431946152.pdf
    • http://vagency.us/images/cheez-it-cursor-roblox-downloaad-for-free_GM431946152.pdf
    • http://vagency.us/images/free-minecraft-accounts-2021_GM479516143.pdf
    • http://vagency.us/images/dragon-ball-fury-hack-roblox_GM431946152.pdf
    • http://vagency.us/images/roblox-hack-unlimited-robux_GM431946152.pdf
    • http://vagency.us/images/coin-master-links-free-spins_GM406889139.pdf
    • http://vagency.us/images/free-face-roblox_GM431946152.pdf
    • http://vagency.us/images/coin-master-free-spins-usa-2021_GM406889139.pdf
    • http://vagency.us/images/coin-master-free-coins-and-spins-hack_GM406889139.pdf
    • http://vagency.us/images/get-minecraft-windows-10-free_GM479516143.pdf
    • http://vagency.us/images/robux-get-com_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fdf.bin
f1cbb2ca9f47874a8b3ceb727ebb7aa2bceebdf9f68d9aff6afa6c0447d20c2e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FDF 25804 bytes
font_01_sfnt_off00008a9d.bin
d0b63e3f6b9ce80633c03c3183848d3e652556fed7c207b8a0570b4e907ea756		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9D 18748 bytes

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