MALICIOUS
262
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The RTF document contains multiple indicators of exploitation for CVE-2017-11882, including the presence of an Equation Editor OLE object with a high-entropy payload. The ".bin" artifact extracted from the OLE object data is likely the second-stage payload. The file's structure and exploit method strongly suggest a malicious intent to execute arbitrary code.
Heuristics 7
-
Equation Editor OLE1 native payload — CVE-2017-11882 related critical CVE_2017_11882_RELATEDRTF 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_EDITORRTF 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_OBJAUTLINKRTF 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_OBJUPDATERTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
-
Large hex data blocks in OLE object high RTF_EXCESSIVE_HEXRTF contains ~1021KB of hex-encoded data inside \objdata sections — may hide a payload
-
OLE object data medium RTF_OBJDATARTF contains 2 \objdata section(s) — embedded OLE objects
-
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne 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_off000000d3.bin5e31dddb47ed78b6e78795a96df1ef1f14da24960a3c4f317980dd09306424fa |
rtf-objdata-decoded | RTF \objdata at offset 0xD3 | 510802 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.