The search for this specific file string also surfaced results relating to malicious, disguised files, specifically JS downloaders and Trojan threats (e.g., UPS-Label-08494178.doc.js ).
Online tools can convert RAR to ZIP, but user reviews indicate many of these sites are covered in ads and may be unsafe. 51766 rar
You need software such as WinRAR, 7-Zip , or an equivalent archive utility to decompress the file. The search for this specific file string also