Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 fb9170b75704e220…

MALICIOUS

RTF / .DOC

65.2 KB
MD5: 4a492d1d5596e548d48b0f17e34d9147 SHA-1: 5d44a7f82409bbb784197ed4508b9aa135a6379a SHA-256: fb9170b75704e2202310a4ea95652f93cfcc6d4c4700055156ebb8e5532c4a9b
82 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object, indicated by the RTF_OBJDATA and RTF_OBJEMB heuristics. The RTF_OBJUPDATE heuristic suggests that this object is designed to be activated, potentially leading to the execution of malicious code. The extracted artifact 'objdata_00_off00000678.bin' is a suspicious OLE object that warrants further investigation as a potential delivery mechanism for malware.

Heuristics 4

  • \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
  • 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.

FilenameKindSourceSize
objdata_00_off00000678.bin
affd350c0c0e9e1203f3668d9f37c4ed945805d04b7abf02dcaa5f9d738f3e21
rtf-objdata-decoded RTF \objdata at offset 0x678 32423 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.