Attachment: HTML smuggling with WebAssembly (Wasm)

type.inbound
and (
  (
    not profile.by_sender_email().solicited
    and profile.by_sender_email().prevalence in ("new", "outlier")
  )
  or (
    profile.by_sender_email().any_messages_malicious_or_spam
    and not profile.by_sender_email().any_false_positives
  )
  or sender.email.domain.domain == "delivrto.me"
)
and any(attachments,
  (
    regex.imatch(.file_extension, '^[sdx]{0,1}ht[ml]{0,2}$')
    or .file_extension in~ $file_extensions_common_archives
    or .file_type == "html"
  )
  and any(file.explode(.),
    any(.scan.strings.strings,
      strings.ilike(.,
        "*new WebAssembly.Instance*",
        "*WebAssembly.instantiate*",
        "*WebAssembly.compile*",
        "*wbg_load*",
        "*wbg_init*",
        "*bmV3IFdlYkFzc2VtYmx5Lkluc3RhbmNl*",
        "*d2JnX2xvYWQ*",
        "*d2JnX2luaXQ*"
      )
    )
  )
)