Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e0857be36e665c…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 17:34:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 950492897768744ca80baa2e040c7961 SHA-1: 3c64da2e79bd6f496693346c8cff90356115bf7a SHA-256: f3e0857be36e665c1badd03374d26059a47bad2565a465ff332890dd67a26ed7
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into downloading a file from the embedded URL http://netcdn.co/app/431946152/free-to-play-roblox-video-game-hack. The document's content and embedded URLs suggest a theme of game hacks and cheats, a common lure for malware distribution. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/free-to-play-roblox-video-game-hack
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-do-you-hack-roblox-on-a-phone_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/viper-venom-roblox-hacks-sword-simulator_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/hacker-pants-roblox_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/admin-hack-roblox-espaol_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/generator-robux_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-no-survey_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-free-cards-hack_GM406889139.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-get-free-unlimited-robux_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/ww-free-robux-com_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-minecraft-skins-ps4_GM479516143.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/robux-money_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-or-survey-2021_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/minecraft-esp_GM479516143.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-account-roblox-2021_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/cheat-engine-no-download-for-roblox_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/roblox-gift-card-for-free_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-minecraft-generator_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003215.bin
7b15905004d7ccfd18f7e701f22c83a536b374cf5434f00ea259d2f8d187337c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3215 22040 bytes
font_01_sfnt_off000062ff.bin
f6a4a25c284660a4e6ae3e15f218945f7fd655590503b721bac4e520c03439e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62FF 19412 bytes

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