The package is not a malware because the provided evidence is insufficient to make such a determination. Evidence 0 indicates an 'Untrustworthy source project' with low confidence (CONFIDENCE_LOW). This is a red flag, suggesting potential risks, but it does not definitively prove malicious intent or behavior. A low OpenSSF score and lack of popularity can stem from various factors, including being a new project, niche functionality, or simply a lack of community engagement, none of which inherently equate to malware. The absence of evidence regarding malicious code execution, data exfiltration, or other harmful activities prevents a definitive malware classification. Further investigation is required, including:

• Static analysis: A thorough examination of the package's code for suspicious functions, obfuscation techniques, or backdoors. This should involve analyzing the code for network connections, file system access, and registry modifications.
• Dynamic analysis: Running the package in a controlled sandbox environment to observe its runtime behavior and identify any malicious activities.
• Reputation analysis: Checking the package's reputation on various security platforms and vulnerability databases.
• Community review: Examining whether other users have reported any suspicious behavior associated with this package.

Without this additional evidence, labeling @lexical/devtools-core version 0.22.0 as malware would be premature and inaccurate. The low OpenSSF score and unpopularity warrant further investigation, but they are not sufficient evidence on their own.