MALICIOUS
100
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1059.001 PowerShell
The sample is a Microsoft Word document exhibiting a critical heuristic for XOR-encoded strings and a high heuristic for an anomalous OLE slack region. The presence of XOR-encoded strings suggests obfuscation, commonly used to hide malicious code or download URLs. The large slack region is also indicative of a packed or obfuscated file. While no specific exploit or payload is directly identified, these indicators strongly suggest an attempt to exploit a vulnerability or deliver a secondary stage. The document body is heavily corrupted and unreadable, providing no further context.
Heuristics 2
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XOR-encoded strings (key 0x95) critical SC_XOR_ENCODEDFound 2 Windows library/API name(s) XOR-encoded with single-byte key 0x95: 'LoadLibraryA', 'GetProcAddress'
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OLE document has large unaccounted-for region high OLE_SLACK_ANOMALYOLE file is 162,424 bytes but its declared streams total only 16,486 bytes — 145,938 bytes (90%) 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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