RTF / .DOC malware analysis — malicious · b6dff3d26e293369

MALICIOUS

RTF / .DOC

69.2 KB

MD5: 127f77d572b5d0a003e3e6c6dcb2b221 SHA-1: 5b59b972cb3afa6bcdd74b070f9d02c7954ec4c4 SHA-256: b6dff3d26e29336967dea9c2b9eaee29b67ecbaec1021262c4ebfd48f1457a5b

142 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059 Command and Scripting Interpreter T1566 Phishing

The RTF file contains an embedded OLE object that decodes to a PE file, indicating an exploit targeting the Equation Editor. The ".objupdate" heuristic suggests that the embedded object is designed to be activated automatically, likely leading to the execution of a second-stage payload. The presence of RTF_EQUATION_EDITOR and RTF_OBJDATA heuristics strongly points to a known exploit vector for delivering malware.

Heuristics 5

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.
\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
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_off000012a7.bin` `a601b4f32f9a85f7a1826bfcfa002159889ede001cb0f9db680ef06885bc7179`	rtf-objdata-decoded	RTF \objdata at offset 0x12A7	32696 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.