Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d62f56746aa5052…

MALICIOUS

PDF

45.2 KB Created: 2021-05-14 05:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 77818d07f877de64a44fbf35aac55c36 SHA-1: 9c0e9021e4681ab349c91dbfa07a34f80f67a02d SHA-256: 6d62f56746aa5052bf31d745e9db09f6e819eecb8cbb86d0cf6177bd62d0c36d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document displays a fake CAPTCHA to lure the user into clicking a link, likely to download a malicious payload. The embedded URL and numerous other URLs found in the document point to sites offering 'free robux' or similar game-related cheats, a common lure for phishing and malware distribution. No scripts were extracted, but the presence of external URIs and the fake CAPTCHA heuristic strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/lazyblocks-com-free-robux-game-hack
    • http://global-tech-security.be/images/robux-no-human-verification-2021_GM431946152.pdf
    • http://global-tech-security.be/images/moonactive-free-spins_GM406889139.pdf
    • http://global-tech-security.be/images/minecraft-svg-free_GM479516143.pdf
    • http://global-tech-security.be/images/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://global-tech-security.be/images/cool-free-minecraft-skins_GM479516143.pdf
    • http://global-tech-security.be/images/free-robux-no-verification_GM431946152.pdf
    • http://global-tech-security.be/images/free-robux-instantly_GM431946152.pdf
    • http://global-tech-security.be/images/hacked-roblox-game_GM431946152.pdf
    • http://global-tech-security.be/images/free-coin-master-spins-and-coins_GM406889139.pdf
    • http://global-tech-security.be/images/free-robux-real-2021_GM431946152.pdf
    • http://global-tech-security.be/images/get-free-robux-today_GM431946152.pdf
    • http://global-tech-security.be/images/free-minecraft-servers-to-join_GM479516143.pdf
    • http://global-tech-security.be/images/links-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://global-tech-security.be/images/free-game-pack-coin-master_GM406889139.pdf
    • http://global-tech-security.be/images/real-free-robux-codes_GM431946152.pdf
    • http://global-tech-security.be/images/free-robux-group-payouts_GM431946152.pdf
    • http://global-tech-security.be/images/coin-master-hack-apk-july-29_GM406889139.pdf
    • http://global-tech-security.be/images/robux-for-surveys_GM431946152.pdf
    • http://global-tech-security.be/images/how-long-is-the-minecraft-free-trial_GM479516143.pdf
    • http://global-tech-security.be/images/free-roblox-premium_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048eb.bin
4b412e376246ae0716d73a063988da5baab88a0c772255e3ae2424b89194bd8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48EB 29844 bytes
font_01_sfnt_off00008c4e.bin
000d85757c2dbc774c4a4ed19607b9025a632ba167ee8131c5b8e6d7f50f0f1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4E 19008 bytes

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