Malicious PDF — malware analysis report

Static analysis result for SHA-256 70815eed882e3ffc…

MALICIOUS

PDF

37.1 KB Created: 2021-05-21 05:16:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 603566baad95599470dc0fafd5a205e2 SHA-1: 3c19797697d84e699812653c95af9b7faa3ed4f3 SHA-256: 70815eed882e3ffc1636ea1a5c42790ac31e3b1f6208e05ae6869ff77e4db4de
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, aiming to trick users into clicking a link. The embedded URL and document body text point to a Roblox hack generator, suggesting a social engineering attack. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/can-you-actually-get-free-robux-game-hack
    • http://homequeen.de/images/coin-master-gameplay_GM406889139.pdf
    • http://homequeen.de/images/roblox-ftw_GM431946152.pdf
    • http://homequeen.de/images/free-draw-roblox_GM431946152.pdf
    • http://homequeen.de/images/free-minecraft-printables-food-labels_GM479516143.pdf
    • http://homequeen.de/images/roblox-free-clothes-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000310f.bin
b6fb8f6317c21c12ee2d0c0a291eb21f2a90ce5b6c731e9a19f70bd55a915b87		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x310F 26500 bytes
font_01_sfnt_off00006e51.bin
47da03a4981b0a54a8018003304e59ec7e3f87382350c48cbaac3b3d81608ccf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E51 18764 bytes

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