Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8d5e8864638fb93…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 12:15:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ea539fed806712105ce5e4fb626c2b25 SHA-1: cb9d7629e25fd6a3034f693cb0e620ef864ccc3c SHA-256: e8d5e8864638fb931af5fed41cd816f6cba3a5c3cc773e12c8e639e9f82b8e18
90 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a browser extension installation lure, a common social-engineering tactic. It also contains multiple embedded URLs, one of which is associated with a malicious ML classifier score. The document body, though heavily obfuscated, contains references to game-related exploits and URLs, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/what-is-exploiting-in-roblox-game-hack
    • http://muslib.unmus.ac.id//repository/coin-master-free-spin-realme-products_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/windows-10-minecraft-free-with-java_GM479516143.pdf
    • http://muslib.unmus.ac.id//repository/you-promised-my-son-free-robux_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/roblox-free-download_GM431946152.pdf
    • http://muslib.unmus.ac.id//repository/hack-coin-master-with-lucky-patcher_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-2021-twitter_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/robloxfun-com-generator_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/coin-master-mod-version-free-download_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/minecraft-hacked-client-download_GM479516143.pdf
    • http://muslib.unmus.ac.id/repository/free-generator_GM431946152.pdf
    • http://muslib.unmus.ac.id//repository/buy-robux-free_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/roblox-toy-codes-free_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/www-roblox-free-com-generatoryolasite_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/free-minecraft-premium-account_GM479516143.pdf
    • http://muslib.unmus.ac.id//repository/coin-master-rewards-2021_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/how-to-o-get-free-coin-master-spins_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/coin-master-map_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/free-spins-coins-coin-master_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/cm-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005111.bin
31ecf2ad004cd2f96c7ef9e1bc09699fad5821dbba3cba8e136df66c54798ab7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5111 24856 bytes
font_01_sfnt_off00008abe.bin
332feb67be1aecbfc8aa0ddc97fe37fd3c2c9a1323be5d468ed8bc42c0123398		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABE 19064 bytes

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