MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1204 Malicious Link
T1566 Phishing
T1059 Command and Scripting Interpreter
T1027 Obfuscated Files or Information
The sample is an RTF document that leverages the CVE-2017-11882 vulnerability in the Equation Editor. The presence of `RTF_OBJDATA`, `RTF_OBJEMB`, and `CVE_2017_11882` heuristics strongly indicates exploitation of this known vulnerability. The `SE_ENABLE_LURE` heuristic suggests the document attempts to trick the user into enabling editing, a common tactic for macro-based malware or exploits.
Heuristics 5
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CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882Equation 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.
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\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.
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OLE object data medium RTF_OBJDATARTF contains 2 \objdata section(s) — embedded OLE objects
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Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
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Macro/content-enable lure medium SE_ENABLE_LUREDocument instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00001a6e.bind60b7329f9c0ec2692765bb66d461a299d4e54cbc15229482c65485f4b8dc2fa |
rtf-objdata-decoded | RTF \objdata at offset 0x1A6E | 3756 bytes |
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