Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 ac7be59f994a2d6b…

MALICIOUS

RTF / .DOC

213.0 KB
MD5: bcc3e09e95f64ba8a3e866d3a01a47a6 SHA-1: 8c0f95383bd44240ccf222f1f46b61183cc13b37 SHA-256: ac7be59f994a2d6ba829e6a7db30ce60594cc2384c55d673e72ee1256737946a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.005 Visual Basic

The RTF document contains multiple OLE objects, including one that uses a composite moniker and triggers an objupdate. This indicates an attempt to exploit OLE object handling to execute embedded code. The document body explicitly prompts the user to 'Enable Editing', a common lure for macro-based malware delivery. The presence of OLE object data and the lure strongly suggest the document is designed to download and execute a secondary payload.

Heuristics 6

  • Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED
    RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 3 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • OlePres presentation stream in RTF OLE object medium RTF_OLEPRES_STREAM
    RTF contains an embedded OLE object with an OlePres presentation stream. OlePres is an OLE presentation marker and is not enough on its own to identify CVE-2025-21298.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000bd2.bin
8d46b2766fc74b6d541576e3393e57129bb60f46996db8aa8c79f49e14603635		 rtf-objdata-decoded RTF \objdata at offset 0xBD2 12897 bytes
objdata_01_off0000710c.bin
efcad781cab3d633c5a53c0b86b2c30761dd037463d8eb36ded19f59f1126d89		 rtf-objdata-decoded RTF \objdata at offset 0x710C 2632 bytes
objdata_02_off000086a7.bin
cfdf79b95584afe599f8bd01e391d8904839d9495e407a353433d3f5e3be3602		 rtf-objdata-decoded RTF \objdata at offset 0x86A7 12261 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.