Malicious PDF — malware analysis report

Static analysis result for SHA-256 f472c02f76aa4079…

MALICIOUS

PDF

12.0 KB
MD5: c7878106a97e92a05d03236e0a2f9b7b SHA-1: 5da956cc344308bfaa504a387992ae75c1c73e8b SHA-256: f472c02f76aa4079782cdc54707acbc6be36aefc0068056c6f79250a8615f057
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 classification and ClamAV detection, indicating malicious intent. The presence of embedded script payloads and embedded files points to a delivery mechanism for further malicious activity. The embedded URLs, while not directly malicious, are part of the PDF's structure.

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
b1b4e110f082d95cd3cb9b200de4efc8ec16397fed877b3ab9260066c9a6aa3d
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11515 bytes