Malicious PDF — malware analysis report

Static analysis result for SHA-256 377a604f589ebb65…

MALICIOUS

PDF

33.9 KB Created: 2021-07-01 23:11:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ce4cfa508881295e1a3fe6c9836ffaf4 SHA-1: 54cfccab0b558da6617d663c2fff68432a88111c SHA-256: 377a604f589ebb65528e47e1255d42f2e2df3233dcba451e423449c02019684b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple embedded URLs and a heuristic firing for PDF_URI_IP_LITERAL, indicating it directs users to external resources. The document body, though truncated, suggests a lure for game hacks, likely leading to the download of further malicious content. The ML classifier strongly flagged this PDF as malicious.

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.co/app/431946152/infinity-rpg-roblox-hack-game-hack
    • http://103.68.2.77/__statics/gudangsoal/files/1million-free-badges-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/minecraft-roblox-games-free_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-package-codes-roblox-2021-november-17_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-roblox-top-battle-games_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-remove-anti-cheat_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-get-free-roblox-game-card-codes_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-actually-fly-hack-n-roblox-fe2_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-minecraft-client_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-hack-roblox-mobile-android_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/coin-master-hack-without-verification-code_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-cheat-in-roblox-got-talent_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-codes-not-clickbait_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/haktuts-coin-master-free-spins_GM406889139.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/tiktok-free-2021-followers_GM835599320.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-tiktok-followers-app_GM835599320.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/huskybuscom-free-robux_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-hack-2021-free-robux-generator_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/best-roblox-hacks_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/best-way-to-get-free-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_off00002ef4.bin
f8d1c592aed3a7ed2e15a75bb8ec8527c504f8624d98e82850a3f06ae14a1aee
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF4 21704 bytes
font_01_sfnt_off00005ebb.bin
629ee4f98e6aea87afcbb5203f7e9ad4331239be3aaaa1e25de57223d617667f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBB 19236 bytes