diff --git a/discord/flags.py b/discord/flags.py
index 9f687ff9bc..2238a1492d 100644
--- a/discord/flags.py
+++ b/discord/flags.py
@@ -32,6 +32,7 @@
 __all__ = (
     "SystemChannelFlags",
     "MessageFlags",
+    "AttachmentFlags",
     "PublicUserFlags",
     "Intents",
     "MemberCacheFlags",
@@ -1485,3 +1486,68 @@ def require_tag(self):
         .. versionadded:: 2.2
         """
         return 1 << 4
+
+
+@fill_with_flags()
+class AttachmentFlags(BaseFlags):
+    r"""Wraps up the Discord Attachment flags.
+
+    See :class:`SystemChannelFlags`.
+
+    .. container:: operations
+
+        .. describe:: x == y
+
+            Checks if two flags are equal.
+        .. describe:: x != y
+
+            Checks if two flags are not equal.
+        .. describe:: x + y
+
+            Adds two flags together. Equivalent to ``x | y``.
+        .. describe:: x - y
+
+            Subtracts two flags from each other.
+        .. describe:: x | y
+
+            Returns the union of two flags. Equivalent to ``x + y``.
+        .. describe:: x & y
+
+            Returns the intersection of two flags.
+        .. describe:: ~x
+
+            Returns the inverse of a flag.
+        .. describe:: hash(x)
+
+               Return the flag's hash.
+        .. describe:: iter(x)
+
+               Returns an iterator of ``(name, value)`` pairs. This allows it
+               to be, for example, constructed as a dict or a list of pairs.
+
+    .. versionadded:: 2.5
+
+    Attributes
+    -----------
+    value: :class:`int`
+        The raw value. This value is a bit array field of a 53-bit integer
+        representing the currently available flags. You should query
+        flags via the properties rather than using this raw value.
+    """
+
+    __slots__ = ()
+
+    @flag_value
+    def is_clip(self):
+        """:class:`bool`: Returns ``True`` if the attachment is a clip."""
+        return 1 << 0
+
+    @flag_value
+    def is_thumbnail(self):
+        """:class:`bool`: Returns ``True`` if the attachment is a thumbnail."""
+        return 1 << 1
+
+    @flag_value
+    def is_remix(self):
+        """:class:`bool`: Returns ``True`` if the attachment has been remixed."""
+        return 1 << 2
diff --git a/discord/message.py b/discord/message.py
index c74f40c288..b225a75be5 100644
--- a/discord/message.py
+++ b/discord/message.py
@@ -39,6 +39,7 @@
     Union,
     overload,
 )
+from urllib.parse import parse_qs, urlparse
 
 from . import utils
 from .components import _component_factory
@@ -47,7 +48,7 @@
 from .enums import ChannelType, MessageType, try_enum
 from .errors import InvalidArgument
 from .file import File
-from .flags import MessageFlags
+from .flags import AttachmentFlags, MessageFlags
 from .guild import Guild
 from .member import Member
 from .mixins import Hashable
@@ -178,6 +179,16 @@ class Attachment(Hashable):
     waveform: Optional[:class:`str`]
         The base64 encoded bytearray representing a sampled waveform (currently for voice messages).
 
+        .. versionadded:: 2.5
+
+    flags: :class:`AttachmentFlags`
+        Extra attributes of the attachment.
+
+        .. versionadded:: 2.5
+
+    hm: :class:`str`
+        The unique signature of this attachment's instance.
+
         .. versionadded:: 2.5
     """
 
@@ -195,6 +206,10 @@ class Attachment(Hashable):
         "description",
         "duration_secs",
         "waveform",
+        "flags",
+        "_ex",
+        "_is",
+        "hm",
     )
 
     def __init__(self, *, data: AttachmentPayload, state: ConnectionState):
@@ -211,6 +226,32 @@ def __init__(self, *, data: AttachmentPayload, state: ConnectionState):
         self.description: str | None = data.get("description")
         self.duration_secs: float | None = data.get("duration_secs")
         self.waveform: str | None = data.get("waveform")
+        self.flags: AttachmentFlags = AttachmentFlags._from_value(data.get("flags", 0))
+        self._ex: str | None = None
+        self._is: str | None = None
+        self.hm: str | None = None
+
+        query = urlparse(self.url).query
+        extras = ["_ex", "_is", "hm"]
+        if query_params := parse_qs(query):
+            for attr in extras:
+                value = "".join(query_params.get(attr.replace("_", ""), []))
+                if value:
+                    setattr(self, attr, value)
+
+    @property
+    def expires_at(self) -> datetime.datetime:
+        """This attachment URL's expiry time in UTC."""
+        if not self._ex:
+            return None
+        return datetime.datetime.utcfromtimestamp(int(self._ex, 16))
+
+    @property
+    def issued_at(self) -> datetime.datetime:
+        """The attachment URL's issue time in UTC."""
+        if not self._is:
+            return None
+        return datetime.datetime.utcfromtimestamp(int(self._is, 16))
 
     def is_spoiler(self) -> bool:
         """Whether this attachment contains a spoiler."""
diff --git a/discord/types/message.py b/discord/types/message.py
index 93e99ba7ab..10d819ebd4 100644
--- a/discord/types/message.py
+++ b/discord/types/message.py
@@ -74,6 +74,7 @@ class Attachment(TypedDict):
     proxy_url: str
     duration_secs: NotRequired[float]
     waveform: NotRequired[str]
+    flags: NotRequired[int]
 
 
 MessageActivityType = Literal[1, 2, 3, 5]
diff --git a/docs/api/data_classes.rst b/docs/api/data_classes.rst
index ab9e8d678d..735f20d68b 100644
--- a/docs/api/data_classes.rst
+++ b/docs/api/data_classes.rst
@@ -118,6 +118,11 @@ Flags
 .. autoclass:: MessageFlags()
     :members:
 
+.. attributetable:: AttachmentFlags
+
+.. autoclass:: AttachmentFlags()
+    :members:
+
 .. attributetable:: PublicUserFlags
 
 .. autoclass:: PublicUserFlags()