Malicious PDF — malware analysis report

Static analysis result for SHA-256 908bf15043d8692a…

MALICIOUS

PDF

100.4 KB
MD5: 09b1e5bf9bf115995fbafc77c552ddea SHA-1: 89e7ac3ea554447b088ddf86a9007eb96df20776 SHA-256: 908bf15043d8692a25571875b74e63059a7361fbb45fc6b4e12d76ec59ff57f1
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The file is a PDF document identified as malicious by multiple heuristics and ClamAV, specifically flagging it as an exploit. The presence of an embedded script payload and XFA form further indicates malicious intent. The embedded artifact is a PDF-embedded script, likely responsible for the exploit execution.

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
0297d8bb2a99ee50403aadd36cb19843aba836ef4075a26166f2d83353509f36		 pdf-embedded-script PDF raw stream script payload at offset 0x246 102042 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36769
Obfuscation or payload: unlikely

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