Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a9fe0b6af420c36…

MALICIOUS

PDF

37.8 KB Created: 2021-07-03 20:21:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 98b63f72de0c7cc61e410cf63c07d8d6 SHA-1: c544cbf8bdb1b56a313726dc2e5a1cfe7f347fac SHA-256: 3a9fe0b6af420c3685011e7fb26228a64905cc2f004b833ce8c7e51ff7d4ca2b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that lead to pages advertising game cheats and hacks, such as 'free Robux'. The ML classifier strongly flagged this PDF as malicious. The presence of these lures and the direct IP address link suggest a phishing or scam attempt designed to trick users into downloading further malware or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/431946152/free-robux-scams-game-hack
    • http://103.68.2.77/__statics/gudangsoal/files/exploit-engine-roblox-free-no-virus_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/appsmob-info-coin-master-hack_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/hacker-escape-prison-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/aimbot-hack-roblox-script_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-robux-maker-free_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-enter-free-robux-codes_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-coin-master-spins-link_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-links-coin-master_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/robux-adder-hack-download_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-that-you-can-play-for-free_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/cheat-codes-for-theme-park-on-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/bypassed-roblox-t-shirts-free_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-windows-10-hacked-client_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/top-car-games-on-roblox-free_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-pc-free_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-free-stuff_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-real-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-hackeado-de-cuenta_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/can-you-make-shirts-free-on-roblox_GM431946152.pdf
    • https://www.roblox.com/.I
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c5e.bin
2d6302d4f3acc1a1df0314d98cf8b5e123b6cc3ae34603ec155a469e1f80cd44
pdf-font-stream PDF embedded font (sfnt) at offset 0x3C5E 22832 bytes
font_01_sfnt_off00006f76.bin
48eef6298bef607355aca425a8072928fe0e0a0bc0ee660e64f251d9c93ff6b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F76 18976 bytes