Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae7f68e8ac5604ea…

MALICIOUS

PDF

100.5 KB
MD5: df4cdd62ad5d9cdb3981783f91489d22 SHA-1: da02904eba7444d2d79f3198e3a4291516141312 SHA-256: ae7f68e8ac5604eac87a398754f2e3f483269877cacc64df2c33062c4ab8c634
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF utilizes XFA forms and contains an embedded script payload, as indicated by multiple heuristic firings including a critical ClamAV detection. The ML classifier also strongly flagged this PDF as malicious. While the exact script functionality is not fully detailed, the presence of an embedded script payload within a PDF, combined with XFA form usage, strongly suggests an exploit delivery mechanism. The embedded URLs are not directly indicative of malicious activity but are part of the document's structure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000246.bin
6abc99305336f95301918261683869337a1190cb5b6f68081c725bd0dc73b3dc		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102235 bytes

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