MALICIOUS
82
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious due to significant anomalies in its OLE structure, including a large slack region and appended executable-looking payload bytes. The VBA extraction failed, indicating a potentially obfuscated or malformed document. The presence of appended payload bytes strongly suggests this document is a container for delivering a secondary malicious payload.
Heuristics 3
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OLE document has large unaccounted-for region high OLE_SLACK_ANOMALYOLE file is 107,008 bytes but its declared streams total only 16,536 bytes — 90,472 bytes (85%) live in unallocated sector slack. This is the canonical hiding place for pre-macro-era Office exploit payloads (XOR-encoded shellcode reached via a parser pointer-corruption bug in the document structure).
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OLE file has appended executable-looking payload bytes high OLE_APPENDED_PAYLOADOLE compound file contains a large high-entropy region beyond the declared major streams and that region includes shellcode, PE, or loader API markers. This is a payload-carrier signal, not a specific CVE attribution by itself.
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Unsupported Office format for VBA extraction info OFFICE_FORMAT_UNSUPPORTEDolevba could not extract VBA macros (PermissionError); format-agnostic byte-level scans still ran. Likely legacy, encrypted, or malformed OLE/OOXML — re-scanning the same bytes will yield the same outcome.
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