RTF / .DOC malware analysis — malicious · 59db3342761fb779

MALICIOUS

RTF / .DOC

903.9 KB

MD5: 9c34048d76e03846432e8a92837b5411 SHA-1: dadccfed2eecebb89f4e971ecf6b774a5d66a4f5 SHA-256: 59db3342761fb7794f02f7b8398011e320ebce3eeae135e494c57d74aff60567

142 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1027 Obfuscated Files or Information

The RTF file contains an embedded OLE object that decodes to a PE file, specifically targeting the Equation Editor vulnerability. This indicates a likely exploitation for client execution. The presence of ".objdata" and ".objupdate" sections further supports the method of OLE object activation for payload delivery. No specific family could be identified from the static analysis.

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_off00000071.bin` `fb431c1001f5ebda14effce078074f160f74920eb204d1371b9d6308550ddbb9`	rtf-objdata-decoded	RTF \objdata at offset 0x71	462723 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 8.00, consistent with packed or encrypted content.

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