Manual analysis confirmed that the package is safe and does not contain any malicious code.

Note: This report is updated by a verification record

The evidence suggests a high probability of malicious behavior. While YARA rules are known to produce false positives, the detection of the exec() function within a complex string manipulation context (string.toLowerCase()) raises significant concerns. The exec() function, when used with user-supplied or untrusted input, is a common technique for code injection attacks. The fact that the input is being lowercased before execution doesn't mitigate the risk; it's a simple obfuscation technique. The lack of LLM-based analysis prevents definitive confirmation, but the YARA finding, coupled with the relatively low project popularity (55 stars, 11 forks) on GitHub, warrants a high degree of suspicion. The potential for arbitrary code execution makes this package a serious threat.