[RANDOM CHARACTERS].dll is a dynamically linked library. In simple phrase, it is an essential component of a particular parasite. Most threats depend on such libraries and wouldn't work without them. The [RANDOM CHARACTERS].dll file can be responsible for the dangerous payload a parasite carries, so deleting it will definitely reduce all the security and privacy risks.
The [RANDOM CHARACTERS].dll file is installed and used by
Adware.Lop.
You have to delete the [RANDOM CHARACTERS].dll file immediately after you have found it. The parasite will continue to violate your privacy and harm your computer unless [RANDOM CHARACTERS].dll and all related objects will not be completely removed from the system. If you have difficulties erasing the file consider using an anti-spyware program.
Sometimes a presence of [RANDOM CHARACTERS].dll does not indicate that your computer is infected. It can be an essential system file or a file installed by harmless legitimate software and therefore may not pose any threat to your privacy and the system. Although such cases are quite rare, you should thoroughly examine [RANDOM CHARACTERS].dll before completely deleting or leaving it in the system.