Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a0080430d53cb3…

MALICIOUS

PDF

284.5 KB Created: 2011-04-27 13:31:15 Authoring application: Joomla! 1.5 - Open Source Content Management (via TCPDF 2.5.000_PHP4 (http://www.tcpdf.org))
MD5: 0b79d25231792c2491903de0e5639982 SHA-1: 550c649c5ae990f6031b74b24d480893475949d7 SHA-256: 52a0080430d53cb3dcebf64b0319f37d0b8c3cba6e55396d4a8fa953ae8589fd
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as a PDF with embedded URLs, one of which is marked as unknown. The ClamAV heuristic 'Pdf.Dropper.Agent-7597487-0' strongly suggests a dropper functionality. The embedded unknown URL is likely the distribution point for a secondary payload, indicating a common dropper attack pattern.

Machine Learning

  • Nyx PDF Classifier clean score 0.2455

Heuristics 2

  • ClamAV: Pdf.Dropper.Agent-7597487-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7597487-0
  • 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_004_off0000c533.bin
a5337ef1f5a0dfe4dc8fa6b4f3ef847a53624800b5928a0eeef5b888ceecaabc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC533 264072 bytes

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