Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e79f0d17d042b9…

MALICIOUS

PDF

34.7 KB Created: 2021-05-25 07:00:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: df6700577619627307ebb6820117a2ec SHA-1: 59fe1a168926543d6a8cd08ed2e0476f1bb17d82 SHA-256: d4e79f0d17d042b997a4b3fc379cba424eeecb1a2b81835a4299778f24f26e9d
82 Risk Score

Malware Insights

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

The PDF document employs social engineering by presenting a lure for free in-game currency or likes, directing users to download an application. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document encourages users to install a browser extension or update, a common tactic for malware delivery. The embedded URLs point to suspicious domains, likely hosting the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/free-tiktok-likes-app-game-hack
    • http://www.pspmrsmkkb.com/webopac/repository/master-free-spin-and-coin-link_GM406889139.pdf
    • http://www.pspmrsmkkb.com/webopac/repository/daily-coin-master-free-spin-link-facebook_GM406889139.pdf
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-easy-and-fast_GM431946152.pdf
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-game-hacking_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002e8d.bin
3f9f4feb79863e98d309bcc3c7d1c57aaa321a8b481037c3febb9d334cc8c4b1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E8D 25680 bytes
font_01_sfnt_off00006836.bin
7e13fbc4119f45c5ff512709f8e7b8078fcbed6cc64991a23ef627420002bfc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6836 17632 bytes

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