Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5ef64c1d0614f4…

MALICIOUS

PDF

79.3 KB
MD5: e5195a4a5ae6519485f3f802761665a5 SHA-1: 01a7481aea57d6123ea154ae30135bfe0e8b3cf4 SHA-256: 7b5ef64c1d0614f4acded8cc9bb42baa8052be257a30c68f0d0e98223cf18c3d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment

The PDF exhibits characteristics of malicious intent, including the presence of an XFA form and an embedded script payload. ML classifiers and ClamAV detections strongly indicate maliciousness. The embedded script is likely responsible for executing the exploit, leading to the download or execution of a secondary payload. The specific exploit mechanism is not detailed but is associated with the Pdf.Exploit.Agent-6136306-0 signature.

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_0000023c.bin
07e05651d5d7efa9860c192c92e1637d0f21993e2f041942645a47693f804c65
pdf-embedded-script PDF raw stream script payload at offset 0x23C 80536 bytes