The internallib_v647 npm package version 1.0.3 declares a dependency on internallib-helper via an unauthenticated HTTP tarball URL pointing to a bare internal IP address. This setup allows any party able to intercept or control the HTTP endpoint to deliver arbitrary code that will be executed during npm install, due to lifecycle scripts in the tarball. The package source itself is minimal, making the dependency declaration the primary vector for malicious code execution.