If this was an unsolicited email attachment or a "free" version of paid software, it is almost certainly malicious.
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It could be a personal backup or a "split" archive (part of a larger set) where the name is obfuscated for privacy. If this was an unsolicited email attachment or
Some download managers or installers generate temporary alphanumeric names during the extraction process. Safety Recommendations RDWQPZV rar