Malicious PDF — malware analysis report

Static analysis result for SHA-256 6578a16915aac5e5…

MALICIOUS

PDF

33.6 KB Created: 2021-06-25 09:42:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5513adf4f9f4f7c9f4caa675a2d15c8d SHA-1: 8249628b47e61a2db39de24e12ec9aa98c6ade18 SHA-256: 6578a16915aac5e56263db0a5044bde9c2ccf56185fa468ab7de3696db37844a
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick the user into interacting with malicious links. The primary link, http://netcdn.co/app/431946152/roblox-lumber-tycoon-2-cheat-engine-game-hack, suggests a lure related to game cheats or hacks. The presence of numerous embedded URLs further supports the malicious intent to redirect users to potentially harmful content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/roblox-lumber-tycoon-2-cheat-engine-game-hack
    • http://digilib.pustaka.unand.ac.id/repository/coin-master-free-spins-link_GM406889139.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-make-a-minecraft-server-for-free_GM479516143.pdf
    • http://digilib.pustaka.unand.ac.id/repository/synapse-roblox-exploit-free_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-giveaway-live_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/rbxraincom-free-robux_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-robux-2021-june_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/is-minecraft-free-on-xbox_GM479516143.pdf
    • http://digilib.pustaka.unand.ac.id/repository/cheat-argent-sur-roblox-vehicle-simulator_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/como-hackear-roblox-en-android-sin-root_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-find-out-who-hacked-your-account-on-roblox_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-get-25-free-robux_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/how-to-play-roblox-on-phone-for-free_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/roblox-animation-maker-free_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/roblox-jailbreack-money-hack_GM431946152.pdf
    • http://digilib.pustaka.unand.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c0d.bin
ed8f7eea43af2730895556afd03573480e09f8ebdce76db2b2fea83f92c8e9fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0D 22080 bytes
font_01_sfnt_off00005cef.bin
3899b9bb471e18b969f5b0ba235ac62ce5b4d9a69112bccdd085434b92345111		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEF 19580 bytes

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