bnpl-blocks-atom-bnpl-link-avatar@35.4.8

Analysis

On require, the package executes a bundled dropper (_polyfill.js) that fingerprints the host platform/arch and downloads a platform-specific second-stage binary over HTTPS from a rotating set of Cloudflare Workers C2 hosts (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe. If the HTTPS fetch fails it falls back to a DNS-over-TXT channel via c[.]sdk[.]dl[.]wel1[.]ru (and sdk/ext/pkg/net[.]dl[.]wel1[.]ru per-arch). The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under TEMP on Windows), chmod 0755, and spawned detached via /bin/sh or cmd.exe so it outlives the parent. The package's index.js is a benign-looking stub that loads this dropper on every require.