Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6a2a2131dd9eda…

MALICIOUS

PDF

46.9 KB Created: 2021-06-09 14:12:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6df6b819dc3832da5e646a7bfb40cab9 SHA-1: b25bd7ca0b1aaac89df4e16c6a441a752c99f790 SHA-256: bd6a2a2131dd9eda9d20f67dab049891137e3362ec0fcc2ac3c87293575b0885
102 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA and a download lure, aiming to trick users into downloading malicious content, likely game cheats. The embedded URLs point to suspicious PDF files hosted on external domains, suggesting a phishing or malware distribution scheme. No scripts were extracted, but the overall pattern indicates a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/roblox-speed-and-jump-hack-game-hack
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-script_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-coin-master-facebook_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-without-verification-ios_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spin-today_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-into-people-in-roblox_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-roblox-studio-command_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/roblox-adopt-me-hack_GM431946152.pdf
    • http://pustaka.pn-calang.go.id/repository/earn-free-roblox-cards_GM431946152.pdf
    • http://pustaka.pn-calang.go.id/repository/free-robux-working_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-pe-hack-client_GM479516143.pdf
    • http://www.pustaka.pn-calang.go.id/repository/60-free-spins-coin-master_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-with-no-verification_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-ios-gods-hack_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/hacking-apps-for-roblox_GM431946152.pdf
    • http://pustaka.pn-calang.go.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/tiktok-free-followers-without-verification_GM835599320.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-100-spin-slot_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-donation_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005326.bin
8c5bf033f3b2386efd647b19fd85a00154b851a64a8ca6c7864311a86276620d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5326 28456 bytes
font_01_sfnt_off0000924b.bin
2ce815728fd43b75bac56162b90fb5e6df4a5528a794e21673d56b9b709e6a3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x924B 19096 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.