Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1c0ee315979610d…

MALICIOUS

PDF

8.2 KB Created: 2010-06-09 21:05:18 +02:00
MD5: e11abeef03e539dd4a8e3eaf3d6797b7 SHA-1: 25a7660e0ad674bf55df11c28fae62f1081de21f SHA-256: d1c0ee315979610db5a2f7619b9d6be62a971162c293a758b65fe289eb21311c
84 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains an embedded JavaScript stream which is flagged by multiple heuristics. ClamAV detection identifies the content as 'Eicar-Test-Signature', a standard test signature for malware. The JavaScript stream is the likely vector for this detection. No other malicious indicators were found.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2835

Heuristics 5

  • ClamAV: Eicar-Test-Signature critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Eicar-Test-Signature
  • 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. (matched inside decoded stream)
  • 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. (matched inside decoded stream)
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload (matched inside decoded stream)
  • 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.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00000645.js
5b63a8fcf81418fca6ef361c26feb0fd9e4cb14ce1e455faf9ac68b8871b256d
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x645 3314 bytes