RTF / .DOC malware analysis — malicious · bc3e2903f2fd921a

MALICIOUS

RTF / .DOC

118.9 KB

MD5: 20cb2ed12c5e8ff134b114ca034f4138 SHA-1: 6284046756c3fdab444e69b6b9d0b66af3dd29fe SHA-256: bc3e2903f2fd921aa8caaf7ec0fa2ac6838eaae7c63144a65b107627452d3bf2

222 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains an embedded OLE object that leverages the Equation Editor vulnerability (CVE-2017-11882). This vulnerability is known to be used for delivering various types of malware. The ClamAV signature 'Rtf.Dropper.Agent-9761756-0' further confirms its malicious nature as a dropper. No scripts were extracted, but the presence of the Equation Editor exploit strongly suggests the file's purpose is to download and execute a second-stage payload.

Heuristics 6

Decoded Equation Editor payload + PE critical RTF_EQUATION_EDITOR

RTF decodes to an Equation Editor ProgID adjacent to OLE activation and the same decoded object stream contains embedded PE bytes. This matches the Equation Editor exploit surface used by CVE-2017-11882 / CVE-2018-0802 documents, while requiring payload evidence to avoid flagging benign Equation references.
ClamAV: Rtf.Dropper.Agent-9761756-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Rtf.Dropper.Agent-9761756-0
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_off00000046.bin` `15f1706f75965fd49d38c6a6896b53a66e8cc57ba0b1f0e85ed1b1888d515260`	rtf-objdata-decoded	RTF \objdata at offset 0x46	60778 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

Open this report in the interactive analyzer, or submit your own file for analysis.