bnpl-blocks-mobile-bnpl-popup@35.5.9

Analysis

A fake "mobile SDK" package whose index.js requires _runtime.js, a multi-stage dropper. On load it fingerprints the host platform/arch, then downloads a platform-specific binary (linux_x64/linux_arm64/darwin/win32) over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, and oob-worker[.]cf103-070[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If HTTPS fails it falls back to a DNS-TXT chunked transfer from the wel1[.]ru domains (sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru). The downloaded payload is written to a temp file (named .cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows) and executed detached via cmd.exe start /b or /bin/sh, so it outlives the parent process. A 6-hour cache marker suppresses re-download. The package also ships a decoy lib/telemetry.js analytics facade.