Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 8fe1b11ee004693f…

MALICIOUS

RTF / .DOC

190.1 KB
MD5: 08ff056009ec488d1b87cc8b8d6086f1 SHA-1: a7b6449c1ef48c09169debfd217d284f23f91447 SHA-256: 8fe1b11ee004693fc3cb24c74a37f3a28656b2cb61b514639bad40939d1a207a
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

The sample is an RTF document exhibiting high-confidence heuristics for embedded OLE object data and object updates, indicating a likely exploit attempt. The presence of ".objdata" and ".objupdate" sections strongly suggests that the document is designed to activate embedded objects, which is a common technique for delivering secondary payloads. Without further script or URL evidence, the exact nature of the payload remains unknown, but the intent is to execute malicious code.

Heuristics 2

  • \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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00001b84.bin
3f60159dac457573e43c0f1674b67752607a264668fb59da69345f6334cf91ef
rtf-objdata-decoded RTF \objdata at offset 0x1B84 1780 bytes