Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 8dd8042dcb637ce4…

MALICIOUS

Office (OLE) / .XLS

70.6 KB Created: 1996-12-17 01:32:42 Authoring application: Microsoft Excel
MD5: abad8d63fc62dfa9bf948c303a3ecfeb SHA-1: ee0eb606056f5d7500c494cbebefd852b47de273 SHA-256: 8dd8042dcb637ce413b52790b602f86afb4b2adecd5732a24f821ae293c29d72
82 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The OLE document exhibits anomalies including a large slack region and appended executable-looking payload bytes, indicating a potential dropper or downloader. Although VBA macros could not be extracted due to an unsupported format, the presence of appended payload suggests the file is designed to execute malicious code. The embedded URLs, while mostly benign, include references to 'pdf-repair.com', which could be a lure.

Heuristics 4

  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 72,254 bytes but its declared streams total only 24,565 bytes — 47,689 bytes (66%) 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).
  • OLE file has appended executable-looking payload bytes high OLE_APPENDED_PAYLOAD
    OLE 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.
  • Unsupported Office format for VBA extraction info OFFICE_FORMAT_UNSUPPORTED
    olevba 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.pdf-repair.com
    • http://www.pdf-repair.com)/Producer(Advanced
    • http://www.pdf-repair.com)/ModDate(D:20100406171120+08
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/

Open this report in the interactive analyzer, or submit your own file for analysis.