Hi,
just note that nothing can be known about a file just by its name, it is not a unique thing.
You should submit the files to any of the above provided sites (Symantec Security Response, Threat Expert, Virus Total, etc.), the file will be analyzed and you will also get a the MD5 which is something practically unique. You can the use the MD5 to know more about those files if the feedback from the mentioned sites is not enough.