Malicious PDF — malware analysis report

Static analysis result for SHA-256 e469f96fea7087f6…

MALICIOUS

PDF

33.8 KB Created: 2021-05-21 00:45:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2cfdf3da5e3353bac806f232ccf16dfb SHA-1: 0870e278e6d80648ded98d70c4651bfe2d1c269e SHA-256: e469f96fea7087f6a12947c7a3b8480d11758a8d9a577db620711986ca65502a
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a prominent call-to-action to download a file, which is a common social engineering lure for malware distribution. The heuristic 'SE_BROWSER_INSTALL_LURE' further indicates that the document is designed to trick users into installing something potentially harmful. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9509

Heuristics 4

  • 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
  • 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/835599320/get-free-likes-on-tiktok-game-hack
    • http://fmbompastor.com.br/images/robux-download_GM431946152.pdf
    • http://fmbompastor.com.br/images/games-to-get-free-robux_GM431946152.pdf
    • http://fmbompastor.com.br/images/coin-master-rare-cards-hack_GM406889139.pdf
    • http://fmbompastor.com.br/images/claimrbx-free-robux_GM431946152.pdf
    • http://fmbompastor.com.br/images/coin-master-free-spins-2021-app-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002f95.bin
f0518c3952907ffaa96ec40f7ef8e894240cc7de2b2d87dcaf29680949f52553		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F95 23544 bytes
font_01_sfnt_off0000650a.bin
782ce757928ab8849be8d7d6232199a595fd3f8ee03de5cb15c7b9ee803e6cfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650A 17456 bytes

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