Malicious RTF — malware analysis report

Static analysis result for SHA-256 894bd85e8489f2ce…

MALICIOUS

RTF

97.5 KB Created: 2020-03-27 12:53:00
MD5: 340e15c9ee5ae17758bb2e4a7890c0c0 SHA-1: 7bd2df48ad16fe08db23700ab57e781048f9bc76 SHA-256: 894bd85e8489f2ceeb14a9cd0c0b028d9749db622ad3bc68ccfc33323a92bd17
80 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains OLE object data that is triggered for activation via \objupdate, indicating an attempt to exploit vulnerabilities or execute embedded code. The presence of OLE object embedding and update commands strongly suggests a malicious payload delivery mechanism. No scripts were extracted, and the embedded object itself was not further analyzed for specific functionality.

Heuristics 3

  • \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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002c95.bin
89fb5a71461684b1133607a51c242461dc66319e0ada9a045dd8d852295da53e
rtf-objdata-decoded RTF \objdata at offset 0x2C95 17979 bytes