Malicious PDF — malware analysis report

Static analysis result for SHA-256 d06fb9e82f6ef5c6…

MALICIOUS

PDF

41.8 KB Created: 2021-06-04 01:54:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f787d64af3844c9ce24498808ce7a843 SHA-1: c151f232754a4eab6266ece58aaf9d875198af7e SHA-256: d06fb9e82f6ef5c62ff40dcb1eb5f443e1a949256ea5ab92dea1cbf0446dbb07
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick the user into downloading a potentially malicious application. The embedded URL points to a suspicious download location for a 'Coin Master' game hack. The ML classifier also flagged this PDF as malicious with high confidence.

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.online/app/406889139/coin-master-apk-game-hack
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/easy-robux-com_GM431946152.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-no-apps_GM431946152.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spons-apk-2021_GM406889139.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-youtube_GM431946152.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-hack-apk-ios_GM406889139.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-coins-and-spins-link-today_GM406889139.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-codes_GM406889139.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-free-robux_GM431946152.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-no-offers_GM431946152.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-gold-cards-free-link_GM406889139.pdf
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-tool-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004de8.bin
34b59693f9e537d38de452c538d1f9327e90659b80cce5d02dacf439f4cba0c9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DE8 23072 bytes
font_01_sfnt_off0000819b.bin
60a225a48b1b678f90e38b10bd9e6f9d01ffb5102f34dbcee4b716dbf4a04973		 pdf-font-stream PDF embedded font (sfnt) at offset 0x819B 17892 bytes

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