Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8cac27f3a0f3d32…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 07:40:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0e503d14b270e0e9b014cfe30f2ca760 SHA-1: 6b59e17a71842d999fe4d67f73f163fd51aa944d SHA-256: e8cac27f3a0f3d325b02233b794f7ff43c5e043dbb00e75204251890ee0b75cb
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a document body that explicitly advertises free spins and currency for games like Coin Master and Roblox. The heuristic 'ML_NYX_PDF_MALICIOUS' strongly indicates malicious intent, and the presence of external URIs, including one pointing to a raw IP address, suggests the document is designed to redirect users to potentially malicious websites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://netcdn.tw/app/406889139/coin-master-free-spins-instagram-game-hack
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-com-real_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-get-free-robux-by-playing-games_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/bux-life-free-robux_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-rare-cards-for-coin-master-christmas_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-just-click_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/www-roblox-com-free-robux_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/op-rewards-free-robux_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-please_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-daily-free-spins_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/minecraft-skins-download-free_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-roblox-adopt-me-accounts_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/hack-avatar_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/hack-coin-master-download-ios_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/master-coin-free_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003116.bin
5c179d5c1e0a1aa4010d25c129634e7d4f14dde0f9aaeb5bcfd005bc354c83c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x3116 23184 bytes
font_01_sfnt_off0000653c.bin
329ab5e417910f7157b760b955a2397fcdadde05d5f1e3c7d5ef2b588797bdfd
pdf-font-stream PDF embedded font (sfnt) at offset 0x653C 18432 bytes