RTF malware analysis — malicious · b98fb8caedc131aa

MALICIOUS

RTF

78.2 KB First seen: 2025-08-13

MD5: d58eb43f3456c6f2557a244d04aaf0cc SHA-1: 2212730fe8374520ae6c06dd033569e3ad4d0f92 SHA-256: b98fb8caedc131aaf0671121e08c32b34db8708e76c7721f9442635e87bf03da

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains OLE object data and heuristics indicate that \objupdate forces OLE activation. This suggests the file is designed to exploit OLE object handling to execute embedded code. No document body or script content was available for further analysis, limiting the ability to determine the specific payload or family.

Heuristics 3

Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM

RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
\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 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000006f3.bin` `4c4d40fb087849b4c8540636ae5239b694d93b81c6e9fe845e68146f2f369481`	rtf-objdata-decoded	RTF \objdata at offset 0x6F3	4256 bytes

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