Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3fcde3728005836…

MALICIOUS

PDF

45.8 KB Created: 2021-05-30 16:45:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3c75081a6cfe342079ddcaa8cb9e2027 SHA-1: 7db96b0e12e0e4bdef9a35c3da9081935ae4f8d5 SHA-256: b3fcde372800583628f8cc80b374c2b2aecffd896c6f95d284f3830d03d7f008
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA lure to trick users into clicking a link, which is a common social engineering tactic. The embedded URI points to a URL that appears to be related to game hacking, suggesting a potential malware distribution or phishing attempt. No scripts were extracted, but the PDF structure and heuristics indicate a malicious intent to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9580

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/ways-to-get-free-robux-game-hack
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-minecraft-survival-server_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/can-u-get-free-robux_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/coin-master-daily-free-spin-app_GM406889139.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-hacked-client-112-2_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verifying_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-hacks_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/robux-com-free_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/best-free-minecraft-server-hosting_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-codes-2021_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-online-free-download_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-svg-free_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-pastebin_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-do-i-get-minecraft-for-free_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-tiktok-followers-no-downloads_GM835599320.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/classic-minecraft-net-hacks_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-do-i-get-free-robux_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-account-hacked_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-minecraft-website_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-launcher-free_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-minecraft-codes_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-minecraft-accounts-2021_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/coin-master-free-link_GM406889139.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/get-free-robux-2021_GM431946152.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdf
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-please_GM431946152.pdf
    • https://www.roblox.co
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000546c.bin
49469ae5e7c3efb50aa534d700b183ae9ece0d43d1a04c9afbbefbdfb5edb549		 pdf-font-stream PDF embedded font (sfnt) at offset 0x546C 25272 bytes
font_01_sfnt_off00008ea3.bin
b2cd5ec598a8c260812e966e9710fb38f03066217a6d0ec8f431d8a9dca8af42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA3 18724 bytes

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