The package is not a malware because the evidences are weak and based on YARA rules with low confidence. The YARA rules excessive_bitwise_math, unsigned_bitwise_math_excess, multi_decode_3, and very_high_entropy can indicate obfuscation or compression, but they don't provide conclusive evidence of malicious intent. The node-forge package is a well-known cryptography library, so these findings are likely related to its legitimate functionality.