Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c2e5213ec24193…

MALICIOUS

PDF

39.7 KB Created: 2021-04-22 20:59:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: eee5b90a81393c46df88b36ca7e8fb6e SHA-1: a74001ce4798e84a23afa796eea79de011b98276 SHA-256: 94c2e5213ec24193a87b05cb5b72613302b5660b6ec61be8f2cd62f8b9423ddc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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 https://netsecure.pro/app/431946152/https-web-roblox-free-robux-game-hack PDF link annotation
    • http://sudamericarural.org/images/uitbxclub-roblox-robux-hacking.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-assassin-knives-hack.pdfIn PDF document text
    • http://sudamericarural.org/images/free-roblox-usernames-and-passwords-with-robux.pdfIn PDF document text
    • http://sudamericarural.org/images/free-robux-generator-without-human-verification-2021.pdfIn PDF document text
    • http://sudamericarural.org/images/free-roblox-studio-ship-script.pdfIn PDF document text
    • http://sudamericarural.org/images/free-videos-roblox.pdfIn PDF document text
    • http://sudamericarural.org/images/earn-free-robux.pdfIn PDF document text
    • http://sudamericarural.org/images/free-roblox-dominus-november-2021.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-account-free-robux.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-hack-game-guardian.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FFF 24648 bytes
SHA-256: 2bc52092ce4d439d813766b9c04448768ded7107f22607cc27f410022bdf421b
font_01_sfnt_off00007888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7888 18564 bytes
SHA-256: 9602ab52559bd4386c93c3ccbb1a183417a94ff55f6ca3670d8ed0c7c7368250

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