RTF / .DOC malware analysis — malicious · 32f77b5b7f1ef4be

MALICIOUS

RTF / .DOC

745.5 KB

MD5: 167efbca43f4e314c7d6b4afb6129342 SHA-1: 6d5307b934ce71f30aa720f1d3bdd0effc6ce212 SHA-256: 32f77b5b7f1ef4be93849b3565d1001ecda0bdfec3c20f75cbd5d86ec79f2129

242 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1559.002 Component Object Model Hijacking

The RTF document contains an embedded Equation Editor object that is vulnerable to CVE-2017-11882. This vulnerability allows for arbitrary code execution when the object is activated, likely leading to the download and execution of a secondary payload. The presence of OLE object data and the specific CVE firing strongly indicate this exploit vector.

Heuristics 6

CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882

Equation Editor MTEF contains an overlong FONT typeface field, the vulnerable copy primitive for CVE-2017-11882. This is stronger evidence than the Equation Editor CLSID alone because it identifies the malformed record that drives code execution in EQNEDT32.EXE.
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
\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 2 \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_off00000095.bin` `bb6154ad3a8219f3e422ff1ea271888cdcd869dded5846def61c544f50f87384`	rtf-objdata-decoded	RTF \objdata at offset 0x95	381513 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.