Malicious PDF — malware analysis report

Static analysis result for SHA-256 88f08c934f3ba3bd…

MALICIOUS

PDF

12.2 KB
MD5: 494e666cb10c2d1d7c08595ab4f8558c SHA-1: 84a885b93ae5ad0e31e74af310be4a5465a01224 SHA-256: 88f08c934f3ba3bde57961f33eb2c63cf847870fdb6ad6e8d017edf0e7e4da3c
96 Risk Score

Malware Insights

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

The critical ClamAV detection of 'Pdf.Exploit.Dropped-78' strongly indicates a malicious PDF exploiting a known vulnerability. 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 artifact. The document body content appears to be obfuscated script or form data, not user-readable text, reinforcing the malicious intent.

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
28f01944ebc2096a45160335cdf4ce3fe6aac9b2f3f29ae0ca723a55ccee036f
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 11701 bytes