Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc42b120eacd54e7…

MALICIOUS

PDF

93.5 KB
MD5: d458be39547970e92d5932b5edafac3b SHA-1: 297a9a194588bf6d9b0787479c7c38d7089928d0 SHA-256: bc42b120eacd54e7ec1ae2824fdd9fd8b8726f238e0bc76b02ac8f79e31e0b55
178 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload and triggers high-severity heuristics indicating an exploit. ClamAV detections 'Pdf.Exploit.Agent-6136306-0' and 'Pdf.Exploit.Agent-36769' further confirm its malicious nature. The presence of XFA form elements suggests a potential avenue for exploit execution. The embedded script is likely responsible for delivering the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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
9ce75576afbde958d5bb88447875e3db1f523f44224f556527445a8b3a705764		 pdf-embedded-script PDF raw stream script payload at offset 0x246 94994 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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