using (var fileStream = File.OpenRead("suspicious-file.exe"))
{
    // Check if file type can be identified
    if (FileTypeValidator.IsTypeRecognizable(fileStream))
    {
        // Get the actual file type
        IFileType fileType = FileTypeValidator.GetFileType(fileStream);
        Console.WriteLine($"File type: {fileType.Name} ({fileType.Extension})");
        
        // Check specific type
        bool isImage = fileStream.IsImage();
        bool isPdf = fileStream.Is<PortableDocumentFormat>();
    }
}