Malicious PDF — malware analysis report

Static analysis result for SHA-256 206e765ff889262d…

MALICIOUS

PDF

69.1 KB
MD5: 7ea5d2a8136bb974de874c3faef3928d SHA-1: 64cf16c66016cb8ff8d10bc86a37f79d85905c1c SHA-256: 206e765ff889262d364bab9244a0c24c532d4aa7ebae05773f9e1adff063783d
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 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 stream, javascript_obj0012_000.js, is likely responsible for downloading and executing a second-stage payload from the embedded URL, http://www.bitstream.com. The document body content is heavily obfuscated and does not provide clear user-facing text.

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
a0f08d0f55d5377341e2ab68b1568941a75a5683624950f4dc373539a8bfac5f		 pdf-javascript-stream PDF /JS object 12 at offset 0x105FC 3210 bytes

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