Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dbefa25d7c287bf…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 23:47:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bcb8bab0c9bcdb8c2975bcdeaca7baf3 SHA-1: bd47ab6991ac8743848bef6f1d68f03178b1fced SHA-256: 6dbefa25d7c287bfd6d5de42da5d4b4eec72a820e99e3c2c3ace815dfe8a55d7
82 Risk Score

Malware Insights

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

The document contains a fake CAPTCHA lure, aiming to trick the user into downloading a payload from the URL https://netcdn.online/app/431946152/freerobux-hack-us-game-hack. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs indicates a likely attempt to deliver a second-stage exploit or malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/freerobux-hack-us-game-hack
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-free-spin-sites_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/minecraft-java-free_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/best-minecraft-hacks_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/pubg-uc-bc-com_GM1330123889.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/earn-free-robux-for-roblox_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/hack-coin-master-mod-apk_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/sites-for-free-spins-for-coin-master_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-hacks-for-android_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/robux-only_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-hacks-for-free-spins_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/wurst-hacked-client-112-2_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-online-hack-generator_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/earn-robux-com_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/pokemon-go-free-ultra-balls_GM1094591345.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-coins-coin-master-link-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-games-coin-master_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/pubg-uc-live_GM1330123889.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/113-hacked-client_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-hack-tool-apk-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051c1.bin
211b53116777562d45b8af60d44cbb49bda6cd35bb98b63adb72498e024b4c38		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C1 24700 bytes
font_01_sfnt_off00008a6a.bin
62478865cf2de8d1447abac5e796ebf67ed8e61bb9aa673ba70a1d199c2393a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6A 18600 bytes

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