Your executable is a SQLite database

Simon Willison's Weblog notes that Farid Zakaria has outlined a Linux trick where a SQLite file is crafted to double as an ELF executable by setting its application ID to the string SELF. SQLite is a lightweight, file‑based relational database. The ELF sections are stored in SQLite tables, and a small interpreter extracts and runs them, while the binfmt_misc kernel feature can automatically launch any file matching that pattern. This approach lets a database file be invoked directly as a program.

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