Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb33ae2d48caf41d…

MALICIOUS

PDF

41.4 KB Created: 2021-05-22 14:43:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ee027da18cd78da969ae9ffe7e96b44c SHA-1: a9ad10752e1ab9f6254d85b5b087ef5d0abb2c02 SHA-256: cb33ae2d48caf41dde7d36b855a63126b7777eda7286372594e2f5f5a62f5648
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a fake CAPTCHA lure and a prominent 'CLICK HERE TO ACCESS ROBLOX GENERATOR' call-to-action, directing users to external URLs. These URLs are likely intended to host malicious payloads or further phishing content. The presence of a fake CAPTCHA strongly suggests an attempt to trick the user into executing a malicious action.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7471

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/funblox.xyz-free-robux-game-hack
    • http://hospitalsalamanca.cl/images/roblox-hackers-list_GM431946152.pdf
    • http://hospitalsalamanca.cl/images/coin-master-claim-spins_GM406889139.pdf
    • http://hospitalsalamanca.cl/images/roblox-verification_GM431946152.pdf
    • http://hospitalsalamanca.cl/images/free-robux-no-verification-or-survey_GM431946152.pdf
    • http://hospitalsalamanca.cl/images/free-spins-coin-master-links-no-human-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003198.bin
da3c558ab44f34b19cfdacfb494d3bb7fc82ec989ef0d1f28b2f70faaaab3d92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3198 28444 bytes
font_01_sfnt_off0000731f.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x731F 5696 bytes
font_02_sfnt_off00008031.bin
094e3ad3acb05c69538296255af77c281e929786c4e47907665e7e86d1bfa11c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8031 18416 bytes

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