Malicious PDF — malware analysis report

Static analysis result for SHA-256 9696f0091023fb01…

MALICIOUS

PDF

38.7 KB Created: 2021-05-19 14:31:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ae28bed6d0831f72794d30d570e0bdfc SHA-1: b7363781bcd51d94ab1fe112af22eee6474b5fe9 SHA-256: 9696f0091023fb01a666f4b6e114ab5ac97b3cb8a738cbc8a502029d88fff9af
60 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA and a call-to-action button, both designed to trick the user into clicking a malicious link. The embedded URL, https://netcdn.xyz/app/431946152/how-to-get-free-robux-easy-hack-game-hack, is presented as a way to get free Robux, which is a common lure for scams. The document's content and heuristics strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 5

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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-robux-easy-hack-game-hack
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000034ec.bin
a47a11391a93e088ab449db0d761de052ff72f3c6dee24a737ecf0f7d9c5c858		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34EC 27436 bytes
font_01_sfnt_off00007413.bin
ae4481784f2b59baf7f887bcc8933de4398304efe668e0a39e1c63b4066a7356		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7413 18860 bytes

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