Malicious PDF — malware analysis report

Static analysis result for SHA-256 354acb1ee3b5a4ce…

MALICIOUS

PDF

18.9 KB
MD5: 52819bef70ab6431fafb96f20c4f25d7 SHA-1: 7ac671714b5bc917f05bd205895340c6af799a14 SHA-256: 354acb1ee3b5a4ceb173c6955727bbd309f9abfe6105127fd8b4ede7a5e9c5e0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates a known PDF exploit. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is designed to drop and execute a secondary malicious payload. The document body content is not human-readable and appears to be obfuscated or malformed data, offering no direct insight into a social engineering lure.

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
1d29cb0744be38976abc83c2ae073708aa63498b1b00ed7c775fb5248f9284f5
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18581 bytes