Malicious PDF / .SWA — malware analysis report

Static analysis result for SHA-256 46a76a185e0d41bf…

MALICIOUS

PDF / .SWA

6.5 KB Authoring application: Ghamariqegi (via 8e81aPizoxuafocebi)
MD5: b5135f799f513443ceeef7f2ab682bc3 SHA-1: dc3959ed21c4dca02633431e4edfffe1fcb0b1b1 SHA-256: 46a76a185e0d41bf023e03a7c1d062aa9e4e42d80b898ea93aa5a50fc3384a5c
78 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection for Heuristics.PDF.ObfuscatedNameObject further suggests malicious intent. The embedded JavaScript file, 'javascript_obj0010_000.js', is likely responsible for executing the malicious payload. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure.

Heuristics 4

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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
javascript_obj0010_000.js
2c5522e807b63b772d04981ce7060edb9be4bf1d8e75e0273768f249d0a5dae4
pdf-javascript-stream PDF /JS object 10 at offset 0x11BD 1914 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).