Malicious PDF — malware analysis report

Static analysis result for SHA-256 96574bd3de53afd3…

MALICIOUS

PDF

45.6 KB Created: 2021-06-01 05:35:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 21976e9c68ad2af9e590f2eb2e136537 SHA-1: ffe8e178dd19fffce86648dfcb76e8b96b6fadea SHA-256: 96574bd3de53afd3d65f92c954209d20c014020f56b1b006a60951b9f2f84b66
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick the user into interacting with a malicious download link. The embedded URL points to a resource that likely serves as a lure for malicious activity. No scripts were extracted from this sample, but the presence of a fake CAPTCHA and external URI suggests an attempt to exploit user interaction for potential second-stage execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/what-to-do-if-you-hacked-someone-on-roblox-game-hack
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-spin-coin-master-2021-link_GM406889139.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-tiktok-likes-trial_GM835599320.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-robux-codes-that-work-2021_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-hack-into-a-roblox-players-login_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/tiktok-like-bot-free_GM835599320.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/what-roblox-game-gives-you-free-robux_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/easy-ways-to-earn-robux-for-free_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-windows-10-hacks_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-k-upreme-freestyle-roblox-id_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-hack-download_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-com-free_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-codes_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-android_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/is-robux-hack-real_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-likes-for-tiktok_GM835599320.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/free-robux-hack-trackid-sp006_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/is-minecraft-free-on-pc_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/minecraft-mobile-free_GM479516143.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/get-free-robux-kesrer_GM431946152.pdf
    • https://vissalutis.pl/wp-content/uploads/fsqm-files/freer-pro-tiktok-fans_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050d3.bin
4e4e53f3a074f0bc4a785b0cbb9f7c08119f00561b2ac196801627f38852879d
pdf-font-stream PDF embedded font (sfnt) at offset 0x50D3 25464 bytes
font_01_sfnt_off00008bf3.bin
6066d53fcdebb1ce120b2d4c2fe604ecd160658a260b5897442e3493edb5434c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF3 19556 bytes