Malicious PDF — malware analysis report

Static analysis result for SHA-256 02134c9f41f85c01…

MALICIOUS

PDF

19.6 KB
MD5: 4bb63edd272e0b1daf50d519a3e8d850 SHA-1: 409317495e023d4f43e49769eed3936a586251a2 SHA-256: 02134c9f41f85c012ea9648ee5213a1db1326c00a97c49332c76ffee682cf48b
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by multiple detection engines, including a high-confidence ML classifier and ClamAV, which identified it as Pdf.Exploit.Dropped-78. The presence of embedded scripts and an embedded file suggests it is designed to exploit vulnerabilities and execute a secondary payload. The benign URLs present are likely decoys or standard PDF schema references.

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 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 script payload in PDF stream low 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 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
079f66f29dbc57f6d31fa0fed3feea6386095543366a704f1b93f0076febfe28
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 19288 bytes