Malicious PDF — malware analysis report

Static analysis result for SHA-256 02627303032cd751…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 13:33:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 75c0badca51a310f8c0a06c95942985d SHA-1: 7a16330da384049d32c2e62bb1e2bb4ab6bc909a SHA-256: 02627303032cd75155af521a2c749b83fde661e2975a4cced9a82c5e2fb7e40c
82 Risk Score

Malware Insights

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

The PDF document displays a fake CAPTCHA and a call-to-action button, aiming to lure the user into clicking a link. This behavior is indicative of a social engineering attack designed to trick users into downloading a malicious payload. The presence of multiple suspicious URLs further supports this assessment.

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/how-to-change-roblox-username-for-free-2021-game-hack
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coin-master-100-spin_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/wurst-112-2_GM479516143.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/coinmaster_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-hack_GM406889139.pdf
    • http://elearning.man2smd.sch.id/__statics/gudangsoal/files/free-minecraft-skin-maker_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003270.bin
f25fc93dfa3ff4cc6e4457bf3d68fd6e501e30727f825d3778728895929a19cd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3270 25152 bytes
font_01_sfnt_off00006c87.bin
bf7704042115058311276e91f581871491bc3524547d766b0e7085d334bb6686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C87 19644 bytes

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