Malicious PDF — malware analysis report

Static analysis result for SHA-256 03c168cbc27c6e9a…

MALICIOUS

PDF

43.3 KB Created: 2021-05-11 18:12:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 71bb74dfe9169b7302ea1f8aeb0fc7d4 SHA-1: 5c3ee49ad3abf371fa7c179710b44a07a6e53bb3 SHA-256: 03c168cbc27c6e9adb40c745e00c5eb43da6eee0bd0fac802563eebf50f714cb
82 Risk Score

Malware Insights

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

The document contains numerous embedded URLs and a lure to copy/paste content into a shell, strongly suggesting an attempt to trick the user into downloading a second-stage payload. The ML classifier also flagged this PDF as malicious with high confidence. The presence of embedded URLs and the lure to execute commands indicate a likely attempt to exploit the user's interest in game cheats to deliver malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.xyz/app/479516143/noob-vs-pro-vs-hacker-vs-god-minecraft-game-hack
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/robux-game-com_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/roblox-free-login_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-free-blogspot_GM406889139.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/wahoo-gaming-co-free-robux_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/rbx-website_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/rbx-robux_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-hack-2021-android-apk_GM406889139.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/change-roblox-username-free_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/hack-minecraft_GM479516143.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/minecraft-pe-free-ios_GM479516143.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/free-robux-by-watching-ads_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/free-robux-only-username_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/free-spin-link-for-coin-master_GM406889139.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/coin-master-hack-free-spins_GM406889139.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/2021-roblox_GM431946152.pdf
    • http://mamuhammadiyahnagahure.com/__statics/gudangsoal/files/roblox-robux-generator-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d95.bin
3ec9276149fc7dce66a370d100d7fc0d8a4150717df5f1a41aa07b3782d90132		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D95 24772 bytes
font_01_sfnt_off0000865b.bin
b5eb0aae73330acae6586af23efb0811f8df12c769def1792db1ea9c848aef1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x865B 18500 bytes

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