Malicious PDF — malware analysis report

Static analysis result for SHA-256 c998d09fd41abd10…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 02:32:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1993aeefe6b31ab874a416b8d86ccc3c SHA-1: f5e3c6da7872ff1838791453d0a8e95aa84d6317 SHA-256: c998d09fd41abd10c721d9f9c46070fb10a8cb7ae1549c5eb7c49499a79fed6f
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and references to free Robux and game hacks, indicating a social engineering lure. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a URI pointing to an IP address further supports malicious intent. While no scripts were explicitly extracted, the document's structure and content suggest it is designed to trick users into downloading further malicious content.

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/hacks-for-free-robux-on-roblox-no-human-verify-game-hack
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-para-descargar-hackeado_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/robux-free-online_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-do-you-hack-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/giving-people-free-robux-livestream_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/win-free-robux_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-generator-no-survey_GM431946152.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/minecraft-app-free-download_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-roblox-shirt-girl_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/ariana-grande-break-free-roblox-id_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-free-robux-right-away_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-ninja-pack-roblox_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/free-robux-no-survey-and-no-human-verification_GM431946152.pdf
    • http://103.68.2.77/__statics/gudangsoal/files/classic-minecraft-net-hacks_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003008.bin
cac8017d084932be2ad9ffd94b8533519d725bd93dbc109930c4cf9a6864eeb0
pdf-font-stream PDF embedded font (sfnt) at offset 0x3008 22748 bytes
font_01_sfnt_off00006291.bin
a21c1bebd32f56005cb7016792ab6dd52966884799215e2bec95f84cb5ce6a74
pdf-font-stream PDF embedded font (sfnt) at offset 0x6291 19656 bytes