Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a9ec2093029a3a8…

MALICIOUS

PDF

47.3 KB Created: 2021-05-13 18:02:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3ebd7a65e599a3bd54c23753a3c2d754 SHA-1: ca06c58465f85e7e43074d30427157210200a473 SHA-256: 6a9ec2093029a3a80f5cf60b2efd957a6be9e97751ac74339ed4d4794703bfb5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document exhibits malicious behavior, primarily through the presentation of a fake CAPTCHA to trick users into interacting with the document. It contains an embedded URI pointing to a suspicious URL, likely intended to host a secondary payload or facilitate further compromise. The ML classifier also flagged this PDF as malicious, increasing confidence in its harmful intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/406889139/hack-the-game-coin-master-game-hack
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/how-to-add-mods-to-minecraft-pe_GM479516143.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-robux-without-offers_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/coin-master-online-hack_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/80-free-spins-coin-master_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/coin-master-link_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/earnrobux_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/bloxawards-com-earn-free-robux_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/haktuts-coin-master-hack_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/minecraft-app-free-download_GM479516143.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/easy-free-spins-coin-master_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/universal-minecraft-converter-free_GM479516143.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/can-you-actually-get-free-robux_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/coin-master-hack-2021-download_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/mcpe_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004eae.bin
e6461231eb86cf504b9aa52d943efd7e5a4b924b60dd346877c55b07474fa62b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EAE 26092 bytes
font_01_sfnt_off00008932.bin
df85173feea72dc2f2189124c35b140faf44ef7a36f3496b492965e474480a3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8932 4084 bytes
font_02_sfnt_off000096f1.bin
2f83051d17fae7824be312dca8a0683f54a2c939f925aee2db8065487592d47a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96F1 18144 bytes

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