RTF malware analysis — malicious · 4bc7b8fded24a280

MALICIOUS

RTF

8.2 KB

MD5: 79448c02d4b2b2e220122144474ee234 SHA-1: 5260a71629c84e7e092cf9734cf105729483e661 SHA-256: 4bc7b8fded24a280c35ebce0b4cecc83725e655ed1c983a5e8ac10e29aabd379

80 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains embedded OLE objects and triggers OLE activation via \objupdate, indicating an attempt to execute embedded code. The presence of RTF_OBJDATA and RTF_OBJEMB heuristics strongly suggests the file is designed to exploit OLE object handling. While no specific payload or URL was directly extracted, the structure points to a downloader or exploit delivery mechanism. The document body was heavily obfuscated and unreadable, preventing further analysis of the lure.

Heuristics 3

\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
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000fb9.bin` `73691a4231e7c0abcf84ceb5c483971fa04c7af54ce579256365a275ba00ee8f`	rtf-objdata-decoded	RTF \objdata at offset 0xFB9	1566 bytes

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