Malicious PDF — malware analysis report

Static analysis result for SHA-256 c92302324d32e9e2…

MALICIOUS

PDF

12.1 KB
MD5: b3362c7f270cf9731105a63c8556fff7 SHA-1: 269094ae9c402a91a95242be73daa5c622ede8a6 SHA-256: c92302324d32e9e22c538cc4a73d006f2b993b3528b084ccb601aa1ed7adbd9b
126 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV (Pdf.Exploit.Dropped-78) and a machine learning classifier. It contains an embedded script payload and is structured as an XFA form, both common techniques for PDF-based exploits. The embedded file further suggests a dropper or 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
0cabc9ca1cf9977b79f0a6e646f119a52569ac4b388bc4230138d1eb6c78f626
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11618 bytes