Malicious PDF — malware analysis report

Static analysis result for SHA-256 726080bd70bd0b3b…

MALICIOUS

PDF

34.7 KB Created: 2021-07-07 01:05:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f5756b77729c7fb33cad1dc2573cdbca SHA-1: 969cb35cd80311caf0337d8f6216842dff19a7f9 SHA-256: 726080bd70bd0b3b873f953231be73c6a33bc8775b95720f5ae3460dea6e631d
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a visual call-to-action, strongly suggesting a phishing or malware distribution attempt. The lures of 'free Robux' and 'free spins' are common social engineering tactics. The ML classifier also flagged this PDF as malicious with high confidence.

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/431946152/free-robux-microsoft-game-hack
    • http://103.30.145.97/__statics/gudangsoal/files/free-spin-codes-coin-master_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-invite-friends-free-spins_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/tiktok-free-99_GM835599320.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/hacks-for-exq-tops-roblox_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-hack-coin-master-spin_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/get-more-robux_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-coins_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/hacks-in-the-roblox-chat_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/minecraft-free-download-iphone_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-websites-no-human-verification_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-change-your-username-on-roblox-for-free_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/cheat-roblox-abeille_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/roblox-free-robux-hack-2021_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-quiz_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-use-cheat-engine-on-roblox-galaxy_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/what-is-coin-master_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fe6.bin
45bfaa87865c2584c8c106467b17035735997a6c88e60eea3e5114a6012cb492
pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE6 22492 bytes
font_01_sfnt_off00006249.bin
6405807597aca73567740711097b1a0abf87aa815f4236fbfdcb073f0355892d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6249 19136 bytes