Malicious RTF — malware analysis report

Static analysis result for SHA-256 ea459cf585888e8d…

MALICIOUS

RTF

44.3 KB Authoring application: Msftedit 5.41.15.1516 First seen: 2015-09-17
MD5: 53f89e5f0b1c9e6fdbf6366b524a6ca0 SHA-1: a50d110f6619dd8a5f7e2fcb086960eb5fcdbd15 SHA-256: ea459cf585888e8dd097b14ee2026f5b87f59d0208b007ef275b112ab466a2ad
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information T1203 Exploitation for Client Execution

The RTF file contains embedded OLE objects, including a package object, and critical PE header information within its hex data. The document body, though partially truncated, suggests a lure related to viewing a receipt. The presence of a PE header strongly indicates that the embedded object is a Windows executable payload, likely intended for execution upon user interaction.

Heuristics 4

  • PE header (with DOS stub) in hex data critical RTF_MZ_HEX
    Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000000dc.bin rtf-objdata-decoded RTF \objdata at offset 0xDC 16881 bytes
SHA-256: 366504d4b303a824ba3f0ccf53c808c9f803d92ef460d07fd292f5a1c5b29b15

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