type.inbound
and any(attachments,
(
.file_extension in~ ("html", "htm", "shtml", "dhtml")
or .file_extension in~ $file_extensions_common_archives
or .file_type == "html"
)
and any(file.explode(.),
any(.scan.strings.strings,
// arrayBuffer, eg repetition:
// [0xa0,0x8e,0xd0,0x60,...]
regex.icontains(., '(\W?0x[a-zA-Z0-9]{2}\W?,\s*){100}')
)
and any(.scan.strings.strings, strings.contains(., ".map"))
)
)
Playground
Test against your own EMLs or sample data.