Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ee73bc3f6ad37c…

MALICIOUS

PDF

275.6 KB Created: 2011-04-16 16:43:52 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: bb091dfeef924285553588233f371582 SHA-1: 28807e003804efec17566252d7d8969f256668fc SHA-256: d7ee73bc3f6ad37ca8a2c9a2b2772ccb8f0e050258a0a612a494c5ea59bfc4ff
98 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Dropper.Agent-7597708-0 and a machine learning classifier. An embedded JavaScript stream was detected, indicating the PDF likely contains code to download and execute a second-stage payload from the unknown URL http://gdhdfhedrhdfh.co.cc/QQkFBg0AAQ0MBA0DEkcJBQYNAQIEAgEMBQ==.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8406

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7597708-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7597708-0
  • 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://gdhdfhedrhdfh.co.cc/QQkFBg0AAQ0MBA0DEkcJBQYNAQIEAgEMBQ==
    • http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://www.iec.ch

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000bda3.bin
a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBDA3 264072 bytes

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