Malicious PDF — malware analysis report

Static analysis result for SHA-256 071d0d3389fe8c20…

MALICIOUS

PDF

44.1 KB Created: 2021-06-09 09:42:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 25a9f1eb74f74f7ea434a72ae2081f4a SHA-1: d8dfb57382f00fc2bb47706a898f7505bf2d57f0 SHA-256: 071d0d3389fe8c2030af71e778140585b3e61730d2d2f59ed24317600840f31b
82 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA lure to entice users into clicking malicious links, as indicated by the 'SE_FAKE_CAPTCHA' heuristic. The primary malicious URL identified is https://netcdn.tw/app/431946152/how-to-hack-treadmills-roblox-heigth-lifting-sim-game-hack. The document's content and embedded links suggest a phishing attempt related to game hacks or cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/how-to-hack-treadmills-roblox-heigth-lifting-sim-game-hack
    • http://katalog.gemalibrary.net/repository/easy-robux-hack_GM431946152.pdf
    • http://katalog.gemalibrary.net/repository/free-spins-for-coin-master-game_GM406889139.pdf
    • http://katalog.gemalibrary.net/repository/teach-me-to-hack_GM431946152.pdf
    • http://katalog.gemalibrary.net/repository/only-robux-hack_GM431946152.pdf
    • http://katalog.gemalibrary.net/repository/robux-giver_GM431946152.pdf
    • http://katalog.gemalibrary.net/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdf
    • http://katalog.gemalibrary.net/repository/free-robux-generator-for-roblox-2021_GM431946152.pdf
    • http://katalog.gemalibrary.net/repository/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://katalog.gemalibrary.net/repository/coin-master-free-coin-and-spin-app_GM406889139.pdf
    • http://katalog.gemalibrary.net/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdf
    • http://katalog.gemalibrary.net/repository/coin-master-spins_GM406889139.pdf
    • http://katalog.gemalibrary.net/repository/free-spins-from-coin-master_GM406889139.pdf
    • http://katalog.gemalibrary.net/repository/free-robux-2021-no-verification_GM431946152.pdf
    • http://katalog.gemalibrary.net/repository/hack-a-game_GM431946152.pdf
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-cheat_GM406889139.pdf
    • http://katalog.gemalibrary.net/repository/free-robux-rewards_GM431946152.pdf
    • http://katalog.gemalibrary.net/repository/roblox-land-free-robux_GM431946152.pdf
    • http://katalog.gemalibrary.net/repository/minecraft-free-education_GM479516143.pdf
    • http://katalog.gemalibrary.net/repository/roblox-hack-download_GM431946152.pdf
    • http://katalog.gemalibrary.net/repository/free-coin-master-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f17.bin
1dd1434db94d3f4c499767016b1541ba27fbe9de83ff8214f59475580fc1a791		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F17 24212 bytes
font_01_sfnt_off0000865a.bin
acd4c357d50f8b17436c1be6c6812a8f53fbc62d8fd170ff56ad2cc50548ceb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x865A 19456 bytes

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