RTF / .DOC malware analysis — malicious · ff3d14f7686c34d7

MALICIOUS

RTF / .DOC

301.9 KB

MD5: a99881cbd5650e6508575835aceb9dda SHA-1: c778b128f337a6f34e0cfde02e107da0de50bb35 SHA-256: ff3d14f7686c34d714a28b1acb6763349bc5bc352f8c47652504b28289e6567e

222 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File T1566.001 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The RTF document contains an OLE object specifically identified as related to CVE-2017-11882, indicating exploitation of this vulnerability. The presence of `RTF_EQUATION_EDITOR` and `RTF_OBJAUTLINK` heuristics further supports this. The embedded OLE object, when decoded, likely contains a payload designed to download and execute additional malicious content, a common technique for initial access.

Heuristics 6

Equation Editor OLE1 native payload — CVE-2017-11882 related critical CVE related CVE_2017_11882_RELATED

RTF decodes to an OLE1 Equation.3 embedded object whose native data is large and payload-like, and \objupdate requests automatic activation. This is the delivery shape used by Equation Editor RCE documents such as CVE-2017-11882/CVE-2018-0802, but the malformed MTEF record needed for exact attribution was not recovered.
Split hex Equation Editor ProgID + OLE object critical RTF_EQUATION_EDITOR

RTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
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_off00001926.bin` `86e81e4e9a700d2905ee2fb3acd090745ef046b5e8590405d870de8ea6212f08`	rtf-objdata-decoded	RTF \objdata at offset 0x1926	100670 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.