The npm package simple-date-formatter-new-12@1.0.0 contains malicious code in its postinstall script that executes automatically during installation. This script fetches data from an internal Baidu host and exfiltrates the response to an attacker-controlled server. The package's stated functionality is a simple date formatter, but the embedded network activity is unrelated and indicative of a dependency confusion or typosquatting attack to probe internal network access and leak data.