Malicious PDF — malware analysis report

Static analysis result for SHA-256 507d540d52727e78…

MALICIOUS

PDF

69.9 KB
MD5: 95f9db14fb6b62fe56f836ee715cbcdd SHA-1: 8955cc0c564ce946c8aab1372340af618ceaaf27 SHA-256: 507d540d52727e78151868b4019625443ef593910563e44e0c799eb0488ec7f7
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further suggests malicious intent. The embedded JavaScript is likely designed to download and execute a second-stage payload, although the specific actions are obfuscated. The presence of an embedded URL, http://www.bitstream.com, suggests a potential command and control or download source.

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.
  • 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.bitstream.com

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
0725b092ced5eda3a84ba96fe897f90c27fcef389baaa51b30fba18055864137		 pdf-javascript-stream PDF /JS object 12 at offset 0x10608 3968 bytes

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