Malicious PDF — malware analysis report

Static analysis result for SHA-256 17f06f5216c5ba0b…

MALICIOUS

PDF

11.8 KB
MD5: 612c140a2250ad91b2e5ae96483baa54 SHA-1: c27bd5e635fbc13f1698abd9a0df5fa1bb7a4ab2 SHA-256: 17f06f5216c5ba0bba5be7563b32ec358129aede5157a7e5ba8a4134088f6a79
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Phishing: Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV and an ML classifier, indicating it contains an exploit. The presence of embedded scripts and an embedded file further supports its malicious nature. The specific ClamAV detection name 'Pdf.Exploit.Dropped-78' suggests it's designed to drop a secondary payload.

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 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 script payload in PDF stream low 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 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
f36c591c33ae568a9f4b2da380004b75813ff39d9eb7d24a90771f7f98f8da05
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11330 bytes