Sumatra PDF Portable.exe is part of a product called known as SumatraPDF and the developer is Krzysztof Kowalczyk .
If you think that this file contains a virus or another malware, please download a virus scanner.
If Sumatra PDF Portable.exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Installing an antivirus is recommended.
Not all processes can be uninstalled without the help of a 3rd party tool, especially malware. To see if it can be uninstalled, first go to Start > Control Panel > Add/Remove programs and select SumatraPDF from the list to remove the process Sumatra PDF Portable.exe from your computer.
If you have any problems with Sumatra PDF Portable.exe, you may try using a registry cleaner or a speed-up software to check, analyze, and fix problems that are affecting the performance of your computer.
You may try contacting Krzysztof Kowalczyk, the developer of Sumatra PDF Portable.exe and ask for more information.