Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee59ff5a96c6c94…

MALICIOUS

PDF

11.7 KB
MD5: aa8308c8fc68400da192ba586657b0ca SHA-1: 9d6921c4ef32d93a34e2142aedb5b8018642d778 SHA-256: eee59ff5a96c6c94adeb8239d8232035c8df071c819b3acc31fad136d53057ac
126 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The critical ClamAV detection of 'Pdf.Exploit.Dropped-78' and the high ML classifier score strongly indicate malicious intent. The PDF contains an embedded script payload, suggesting it's designed to exploit vulnerabilities upon opening. While specific URLs were benign or unknown, the embedded nature and exploit detection point to a dropper or exploit-laced document.

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
0eefb2954dcfaa20fa02d14a3d6aa01890d27ca5374a6c138036143904def864
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11199 bytes