Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f5835d43cb18d1…

MALICIOUS

PDF

45.4 KB Created: 2021-06-10 22:23:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 25e2948a7383412d5256caffa12d6ca4 SHA-1: beac928674e0e8c29e4a2a83052ac3940643444c SHA-256: e7f5835d43cb18d181cdc7e57cb8e23f24fad2fc82eb2f8f74abadd8b2d0ebb2
142 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are structured as SEO-optimized PDF links for game cheats and hacks. The document body and heuristics indicate a fake CAPTCHA or human verification prompt, suggesting the user is expected to interact with these links. The primary URL points to a resource related to 'roblox-boxing-simulator-2-hack'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-boxing-simulator-2-hack-xbox-game-hack
    • http://brandyourbody.com/images/cheats-for-gta-5-on-roblox-w-are-the-daves_GM431946152.pdf
    • http://brandyourbody.com/images/coin-master-hack-ios-apk_GM406889139.pdf
    • http://brandyourbody.com/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • http://brandyourbody.com/images/free-roblox-shirt-templates_GM431946152.pdf
    • http://brandyourbody.com/images/best-way-to-get-robux_GM431946152.pdf
    • http://brandyourbody.com/images/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdf
    • http://brandyourbody.com/images/hack-coin-master-download-ios_GM406889139.pdf
    • http://brandyourbody.com/images/how-to-get-free-robux-on-ipad_GM431946152.pdf
    • http://brandyourbody.com/images/free-private-minecraft-server_GM479516143.pdf
    • http://brandyourbody.com/images/free-tiktok-followers-without-downloading-apps_GM835599320.pdf
    • http://brandyourbody.com/images/free-robux-with-code_GM431946152.pdf
    • http://brandyourbody.com/images/minecraft-free-install_GM479516143.pdf
    • http://brandyourbody.com/images/wurst-hacked-client-112-2_GM479516143.pdf
    • http://brandyourbody.com/images/free-spins-coin-master-blogspot_GM406889139.pdf
    • http://brandyourbody.com/images/774-hack-roblox-2021_GM431946152.pdf
    • http://brandyourbody.com/images/coin-master-hack-tool-generator_GM406889139.pdf
    • http://brandyourbody.com/images/crazygames-free-robux-hax_GM431946152.pdf
    • http://brandyourbody.com/images/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdf
    • http://brandyourbody.com/images/coin-master-hack-tool-v1-9-download_GM406889139.pdf
    • http://brandyourbody.com/images/how-to-get-100-free-spins-on-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005076.bin
c417af5d45ed41610114eabbec9bf649ab34500aefbc2f44fd17e2cb0ffe3e90		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5076 26080 bytes
font_01_sfnt_off00008c31.bin
365a30105c5aea3e49da01f9898cac92c263bf0254b0a9e00ab2ed11fcae3da9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C31 19220 bytes

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