Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ca7df48c636510…

MALICIOUS

PDF

36.4 KB Created: 2021-05-20 14:46:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2b4567dcb83fbf5f41a07ca45d143739 SHA-1: a91e78e9b4f9aeac2aafe1bd7e4614d0e527d17b SHA-256: 32ca7df48c6365106681bdb2e9d68f268dc4ea7c8f3614043f9e7e57c1ff1a20
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, instructing the user to click a link to 'access the Roblox generator'. This link, 'https://netcdn.xyz/app/431946152/how-to-get-free-items-on-roblox-game-hack', likely leads to a page designed to trick the user into downloading further malware. The document also contains multiple embedded URLs pointing to similar lure pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/how-to-get-free-items-on-roblox-game-hack
    • http://jointworkstudio.com/images/free-mod-apk-coin-master_GM406889139.pdf
    • http://jointworkstudio.com/images/roblox-arsenal-hacks-download_GM431946152.pdf
    • http://jointworkstudio.com/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://jointworkstudio.com/images/how-to-get-free-things-on-roblox_GM431946152.pdf
    • http://jointworkstudio.com/images/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003375.bin
ae398e1a817a01adbe6b764036f3b060f9f31ca98bf302f558f3925009f5e95c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3375 24760 bytes
font_01_sfnt_off00006c27.bin
bcf5e908c2747fcd05be89c2efaf93907a574c840def241376182163d884a009		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C27 18476 bytes

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