RTF malware analysis — malicious · c38d511f76083fd6

MALICIOUS

RTF

82.8 KB First seen: 2025-08-13

MD5: 50af5260770fe6a4e00a31d039b95f64 SHA-1: 80923be74ce7cb2a015ce5dafe537afae01d4e25 SHA-256: c38d511f76083fd6f4fc0afe6b700dc0a1998b612f78f9fc85d2aa6e811f3001

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains OLE object data and uses \objupdate to force activation, indicating an attempt to exploit OLE vulnerabilities. The presence of \objupdate and Ole10Native stream suggests the embedded OLE object is designed to execute malicious code upon opening. No document body or script content was available for further analysis, limiting the ability to determine the specific payload or delivery mechanism.

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_off00002063.bin` `4d173a0935900e58ba5cf1b83f9fbcbc7efbd7da1ad89201e75ba82e922f4f29`	rtf-objdata-decoded	RTF \objdata at offset 0x2063	4201 bytes

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