Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2018262599a32b…

MALICIOUS

PDF

12.1 KB
MD5: 29550ccb0e446a47dc367216c4ec068a SHA-1: 0024819c0a8183261804fec3c6e66430968d969c SHA-256: 7d2018262599a32b1ea74258d691816f9d6f7de0f384bb6ffec8ad88ee688755
128 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate this PDF is malicious, specifically flagged as 'Pdf.Exploit.Dropped-78'. The presence of an embedded script payload and an embedded file further supports this assessment. While the document body and script content are heavily obfuscated and unreadable, the overall structure and heuristic firings point to a typical exploit delivery mechanism.

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
0fd191b8413bcfe621e7c8641636f13a3f6724103c62038ddaca816b902eb48b
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11629 bytes