Malicious PDF — malware analysis report

Static analysis result for SHA-256 945d42ff906490cc…

MALICIOUS

PDF

44.0 KB Created: 2021-05-17 23:12:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ac0af52dd819f25bc39b621f30a84e68 SHA-1: e9486c9049520f9db8b3140666d8ae80dc1e05d9 SHA-256: 945d42ff906490cc35e133c3327717d4d8e1326744594ff4c6a33e3d6cb2f341
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a document body that attempts to lure the user into downloading a file, likely a game hack or cheat. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple related URLs suggests a coordinated effort to distribute malware. The document's content and embedded links indicate an attempt to trick users into downloading a malicious payload, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/431946152/picture-roblox-game-hack
    • http://onlinemusicsolutions.com.au/images/coin-master-cheats-2021_GM406889139.pdf
    • http://onlinemusicsolutions.com.au/images/coin-master-hack-apk-2021-download_GM406889139.pdf
    • http://onlinemusicsolutions.com.au/images/roblox-promo-codes-free-robux_GM431946152.pdf
    • http://onlinemusicsolutions.com.au/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://onlinemusicsolutions.com.au/images/i-want-free-robux_GM431946152.pdf
    • http://onlinemusicsolutions.com.au/images/coin-master-hack-2021_GM406889139.pdf
    • http://onlinemusicsolutions.com.au/images/coin-master-no-download-app-but-play-for-free_GM406889139.pdf
    • http://onlinemusicsolutions.com.au/images/no-scam-free-robux_GM431946152.pdf
    • http://onlinemusicsolutions.com.au/images/how-can-u-get-free-robux_GM431946152.pdf
    • http://onlinemusicsolutions.com.au/images/free-robux-accounts-2021_GM431946152.pdf
    • http://onlinemusicsolutions.com.au/images/minecraft-windows-10-free_GM479516143.pdf
    • http://onlinemusicsolutions.com.au/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • http://onlinemusicsolutions.com.au/images/roblox-hack-me_GM431946152.pdf
    • http://onlinemusicsolutions.com.au/images/can-you-get-minecraft-for-free-on-pc_GM479516143.pdf
    • http://onlinemusicsolutions.com.au/images/free-robux-legit_GM431946152.pdf
    • http://onlinemusicsolutions.com.au/images/coin-master-spin-hack-app_GM406889139.pdf
    • http://onlinemusicsolutions.com.au/images/free-minecraft-shaders_GM479516143.pdf
    • http://onlinemusicsolutions.com.au/images/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://onlinemusicsolutions.com.au/images/10-free-spins-coin-master_GM406889139.pdf
    • http://onlinemusicsolutions.com.au/images/free-spins-coin-master-twitter_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aaf.bin
87318e78aa1a4ebe8223d77d7adc80ffd5c30278df1091eb96c8c21ff47bdbd0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAF 27264 bytes
font_01_sfnt_off00008998.bin
fb2c3c980a38bca32d46854b97c41d724600372d3bdcb5f331df89f1565b3689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8998 18304 bytes

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