The package @biomejs/cli-darwin-arm64 contains an embedded executable named package/biome which is a Mach-O binary. The file extension mismatch is also reported. While the presence of an executable raises security concerns, it is plausible that this package legitimately bundles a pre-compiled binary for its command-line interface on Darwin arm64 systems. Without further evidence of malicious behavior, it is not possible to classify this package as malware.