Malicious PDF — malware analysis report

Static analysis result for SHA-256 01371ab1a564fa70…

MALICIOUS

PDF

12.5 KB
MD5: 37be54a3912453ef9cc51c379794a982 SHA-1: 75ed11799e30f2117f9a2fb6b20e0ae07f4bcf0f SHA-256: 01371ab1a564fa704ff031306c1aa0a2427848a223b5f9e3bdb8d9f1c76d671d
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The PDF was flagged by multiple heuristics, including ML classification and ClamAV detection, indicating malicious intent. The presence of an embedded script payload and an embedded file suggests the PDF is designed to exploit vulnerabilities and download a second-stage payload. The embedded URLs, while not directly malicious, are associated with PDF functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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_file_obj0008.bin
18ae48d02934f20fcbc60af4e1ea45b097133df56b1b42c98192631d2e6e4cd8
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 12000 bytes