RTF / .DOC malware analysis — malicious · 204586844914a6f6

MALICIOUS

RTF / .DOC

131.1 KB

MD5: 6600a919cadbb946779c90ae6a7a9199 SHA-1: 570fc8754ec8bf5317a3ae810ddd19f087ab1905 SHA-256: 204586844914a6f62f564d45b96addce6cdae78776c841d4a901739277c80592

222 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059 Command and Scripting Interpreter

The sample is an RTF document that leverages the Equation Editor vulnerability (CVE-2018-0802) to execute arbitrary code. The presence of OLE object data and automatic linking further indicates an exploit attempt. The ClamAV detection signature directly names the CVE, confirming the exploitation vector. No scripts were extracted, but the exploit itself is sufficient to deliver a malicious payload.

Heuristics 6

Equation Editor CLSID critical RTF_EQUATION_EDITOR

Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
ClamAV: Rtf.Exploit.CVE_2018_0802-6825822-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Rtf.Exploit.CVE_2018_0802-6825822-0
Automatically linked OLE object high RTF_OBJAUTLINK

RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
\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
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00001a5a.bin` `e1a3000d1a04e697573ef3b0235718024eefa96c351b404ed7dc7a43953e0aec`	rtf-objdata-decoded	RTF \objdata at offset 0x1A5A	63556 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.94, consistent with packed or encrypted content.

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