Many suspicious sites use "Pics100" as a bait name to trick users into installing "viewers" that are actually adware.
Use a tool like VirusTotal to upload the file and check for malicious scripts. Pics100zip
Some files with generic names are designed to "explode" when opened, filling your hard drive with petabytes of useless data to crash your system. Many suspicious sites use "Pics100" as a bait
If you downloaded this from an unknown email or a "free download" site, do not open it . do not open it .