Final answer:
To determine if the end user successfully downloaded a file from the WildFire submission log, specific indicators such as the 'File verdict' need to be examined.
Step-by-step explanation:
To determine if the end user successfully downloaded a file from the WildFire submission log, we need to look for specific indicators. One such indicator is the presence of a 'File verdict' entry with the value 'benign' or 'malicious'. If the 'File verdict' is 'benign', it means the file was successfully downloaded and is determined to be safe. If the 'File verdict' is 'malicious', it means the file was successfully downloaded but is determined to be harmful.
In the provided snippet of the WildFire submission log, there is no information about the 'File verdict'. Without this information, we cannot conclusively determine if the end user successfully downloaded a file or not.