Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bcfc09b92bde46e…

MALICIOUS

PDF

227.3 KB Created: 2021-07-04 12:33:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8202619bf418c483b36e50d7dde38732 SHA-1: c90b89e40f00b961df53847ff56329933a0733f8 SHA-256: 6bcfc09b92bde46ec292a9aca3e8c372f353dd4d99b155b66008aabf2ba697db
132 Risk Score

Malware Insights

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

The PDF document employs social engineering tactics, including a fake CAPTCHA and a download lure, to trick users into clicking a link. The embedded URL, http://netcdn.tw/app/1094591345/without-pokemon-go-free-pokeballs-game-hack, likely leads to the download of a malicious payload. The document's content and heuristics strongly suggest an attempt to deceive users into executing further malware.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 6

  • 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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.tw/app/1094591345/without-pokemon-go-free-pokeballs-game-hack
    • https://www.simplenepaltravel.com/userfiles/files/spins-gratis-coin-master-hoy_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/jack-hack-for-roblox_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-hack-dot-xyz_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/free-robux-just-enter-username-and-password_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/free-robux-generator-online-no-survey-scratch-studio_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/get-free-robux-without-verifying_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-free-robux-games_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/free-links-coin-master_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/mine-minecraft-games-for-free_GM479516143.pdf
    • https://www.simplenepaltravel.com/userfiles/files/robux-miner_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-robux-for-free-2021-no-human-verification_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/how-to-get-free-robux-in-2021_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/free-coin-master-spins-blog_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/buy-robux-free_GM431946152.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/minecraft-112-2-hacked-client_GM479516143.pdf
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-rewards_GM406889139.pdf
    • https://www.simplenepaltravel.com/userfiles/files/roblox-hack-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off00031f98.bin
20bc6999bdf88f15f8101ffb359386ff76dc90e30b8830d6ac28cff4543df4e5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F98 25576 bytes
font_01_sfnt_off00035b95.bin
22d59b2b8ec9ef1d5db1a35d50a5c7817975d11397788f97ac7101016901d449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35B95 19316 bytes

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