RTF malware analysis — malicious · d3261f016ea976b6

MALICIOUS

RTF

208.9 KB

MD5: 39783115350f1d88b30ac3f5144460c0 SHA-1: 0d579e6f16ffde67ed23b5ad3296f229255a8729 SHA-256: d3261f016ea976b66dd0c75939b74faddc4e9ae08b7c9a527dd58288d008eba9

160 Risk Score

Malware Insights

MITRE ATT&CK

T1559.001 Component Object Model T1204.002 Malicious File

The RTF document contains multiple OLE objects, with specific heuristics indicating the use of Composite Monikers and ".objupdate" which forces OLE activation. This suggests the document is designed to exploit OLE vulnerabilities to execute embedded content. No scripts were extracted, but the presence of embedded OLE objects and the associated heuristics strongly indicate a malicious payload delivery mechanism.

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.
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000772.bin` `3d317ee0403c09beec48bf5eafc81569a0d0e7e7971e715482ad8e598d406945`	rtf-objdata-decoded	RTF \objdata at offset 0x772	11344 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 shell/COM execution token(s).
`objdata_01_off00006117.bin` `3acc104551ed66a0b887faa2f93081783f78d431d81249e2c401c14e62aac774`	rtf-objdata-decoded	RTF \objdata at offset 0x6117	12261 bytes
`objdata_02_off0000c129.bin` `a483f12dcb6e4b0551213d4a635fd37957956b42b40e2fc9f057edbc2419eb50`	rtf-objdata-decoded	RTF \objdata at offset 0xC129	2632 bytes

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