Malicious PDF — malware analysis report

Static analysis result for SHA-256 f061e5dab4203e9d…

MALICIOUS

PDF

45.9 KB Created: 2021-06-03 23:47:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8eb527d725dd68a2dcc1bce521164ecb SHA-1: da014c971210bc44790fe8c64cdd3faec1c21391 SHA-256: f061e5dab4203e9d827c499fad0b7bd637f6854c8d084c478cee5c60d3200e54
122 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA and a call-to-action lure, aiming to trick the user into clicking an embedded URL. This URL, 'https://netcdn.online/app/431946152/how-do-you-get-roebucks-for-free-game-hack', likely serves as a download link for a second-stage payload. The document's structure and content suggest a phishing attempt to distribute malware under the guise of game-related cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/how-do-you-get-roebucks-for-free-game-hack
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/robux-cheat-buncheats-club_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-free-spins-no-generator_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-tricks_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/minecraft-windows-10-free-trial_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/pokemon-go-free-coins-hack_GM1094591345.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-robux-hack-2021_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/pubg-8-uc_GM1330123889.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-spin-link-free_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-free-spins-android_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-get-java-minecraft-free_GM479516143.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-robux-codes-no-verification-2021_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/hack-coin-master-8-ball-pool_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/roblox-its-free_GM431946152.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-spins-coin-master-march-2021_GM406889139.pdf
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/minecraft-dungeons-download-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000541f.bin
8cf37db52cf1c5c309f2422580f10c623042dd03357e0bef1b754b07d76f97d9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x541F 25644 bytes
font_01_sfnt_off00008ff1.bin
9b0926f851b5352a1c94160dd5570857b20d788284ad3dea1803889ab4bbc101		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF1 18572 bytes

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