Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae7657de275d9bc…

MALICIOUS

PDF

48.6 KB Created: 2021-06-11 02:09:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5565deac6ccf729f8315e4211b5cc829 SHA-1: 419d5d3c0590ef9f4dfe211df2b88ca8eb538f40 SHA-256: 4ae7657de275d9bcaf8fbd858bf2db2ce487511ce177e9ecd081d0a929dabcf6
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA to lure users into clicking a link, which is a common social engineering tactic. The embedded URL points to a resource related to game hacks, further suggesting a malicious intent to trick users into downloading potentially harmful software. No scripts were extracted, limiting the analysis to the document's visual and URL-based lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/free-galaxy-wings-roblox-game-hack
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-tool-pc-download_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/coin-master-links-free-spins_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/free-robux-apk_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/minecraft-hack-download_GM479516143.pdf
    • https://perpustakaan.itda.ac.id/repository/promo-code-free-robux_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/minecraft-linux-free_GM479516143.pdf
    • https://perpustakaan.itda.ac.id/repository/minecraft-hack-client-download_GM479516143.pdf
    • https://perpustakaan.itda.ac.id/repository/beat-this-obby-to-get-free-robux_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/what-is-robux_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/treasure-hunt-simulator-roblox-cheat_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-2021_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/daily-coin-master-free-spins_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/op-rewards-free-robux_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-account_GM406889139.pdf
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-a-game-server-on-roblox_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdf
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005371.bin
7e505a471dba1839e24568260e9b67425a19a0e3f3997f192a032d743076a90c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5371 26608 bytes
font_01_sfnt_off00008f73.bin
fd98c8f6e7c2e74bbd5822409159a93ac5c94da083ae4c2eb269d4284375f9e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F73 2836 bytes
font_02_sfnt_off00009919.bin
d9a6f8ae2d6e7a752b1dd47098253caa3f1ad8cb2615bf7c72b15495573daa5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9919 18964 bytes

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