RTF malware analysis — malicious · 60df5fa74a51111e

MALICIOUS

RTF

126.9 KB Authoring application: Msftedit 5.41.15.1515

MD5: ec4ac3f74b1687244dfefc6e406957c6 SHA-1: fd50b5b4cbe214f2019504d255ea8bad3a29b97f SHA-256: 60df5fa74a51111eae0182f752829f54191f3c242822aea2854220659ac73a15

202 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object which is identified as a PE executable. This executable was further flagged by ClamAV as Win.Trojan.Agent-36385. The presence of the PE header in hex data and the embedded executable strongly suggests the file is designed to deliver a malicious payload.

Heuristics 6

PE header (with DOS stub) in hex data critical RTF_MZ_HEX

Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
Package object class high RTF_OBJCLASS_PACKAGE

OLE Package object — can wrap arbitrary files
OLE object data medium RTF_OBJDATA

RTF contains 1 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Suspicious extracted artifact info 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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000122.bin` `34e86523d2b4ef51aac58c7c91c120b5613887dff018c5422e9984a93c82c71a`	rtf-objdata-decoded	RTF \objdata at offset 0x122	63204 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.58, consistent with packed or encrypted content.
`embedded_rtf_000064dd.exe` `0d43356fba3723f2eb95dc81ed66984ef231f4da03e5d53f4b4b7412197abbfb`	embedded-pe	RTF hex-encoded MZ at offset 0x64DD	50765 bytes
Detection ClamAV: Win.Trojan.Agent-36385 Obfuscation or payload: likely Carved artifact entropy is 7.83, consistent with packed or encrypted content.

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