Tools like PeaZip or the command-line p7zip package are standard. A Note on Security

While there is no widely known software or document specifically named "Lgdkhtj.7z," the extension indicates it is a compressed archive created with 7-Zip , a popular open-source file archiver . Because this specific filename appears to be randomized or non-standard, it is often associated with automated file transfers or, in some cases, potentially suspicious downloads. Understanding the .7z Format

Windows often warns you if a file was downloaded from a potentially unsafe internet source. 7zip Malware: Beware 7zip.com

A file is a container that holds one or more files in a compressed state to save space or make them easier to send.

To view the contents of this file, you must use a compatible decompression tool: