Malicious PDF — malware analysis report

Static analysis result for SHA-256 5230403bddef6342…

MALICIOUS

PDF

36.3 KB Created: 2021-05-20 18:31:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 375cd7f43791822e1fc02f87352733a6 SHA-1: d6c1279ffbe575f3067e40df9d80ff430538ce09 SHA-256: 5230403bddef6342461497936ece8a54880ce47d6a51a901b1919670150683fa
82 Risk Score

Malware Insights

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

The document contains a fake CAPTCHA lure and a prominent 'CLICK HERE TO ACCESS ROBLOX GENERATOR' call-to-action, which is designed to trick users into downloading a payload. The embedded URL 'https://netcdn.xyz/app/431946152/hacked-roblox-accounts-list-game-hack' likely hosts the malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

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/hacked-roblox-accounts-list-game-hack
    • http://www.peterdejonge.nl/images/coin-master-free-spins-app_GM406889139.pdf
    • http://www.peterdejonge.nl/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdf
    • http://www.peterdejonge.nl/images/best-hacked-client_GM479516143.pdf
    • http://www.peterdejonge.nl/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://www.peterdejonge.nl/images/real-coin-master-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003394.bin
9057cff17b61f47ebf9dbb3b76f1044fd00712967b272891595b19cb21fa63e1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3394 24228 bytes
font_01_sfnt_off00006af7.bin
4364cdcc1b4e431b6a7cfc51a44ccbde59c7a972961f4ddbd0871ac7a20bc545		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF7 18720 bytes

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