### Incident Summary
Following the spear phishing attack, users unknowingly executed a malicious Android application embedded within the email attachments. This application posed as a legitimate document viewer.

### Technical Details
- **Application Permissions**: The application requests extensive permissions, including access to contacts, SMS, and storage.
- **Execution Triggers**: The application is designed to execute upon opening by exploiting known vulnerabilities in outdated Android versions.

### Mitigation Steps
- Advise users to update Android devices to the latest security patches.
- Block execution of applications from unknown sources.