Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0e401ce39afb6b…

MALICIOUS

PDF

11.8 KB
MD5: ab5b24062ad0321bd6b1d84da7a3e1b9 SHA-1: ce26bccd4a0376fa2462c90269d7293024c6ccf2 SHA-256: 1e0e401ce39afb6b9775a1d227df90558d23271765e3f864c84fb0ace6510c2f
126 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. The presence of an embedded script payload and an embedded file suggests the PDF is a dropper or exploit document. The embedded URLs, while not directly malicious in reputation, are part of the PDF's structure and context for exploitation.

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
7d45449818d5910e00df5d4ee5e7e6700a673e627453dcbb3f4c48fc834de8f6
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11333 bytes