Malicious PDF — malware analysis report

Static analysis result for SHA-256 99932fed6534cf17…

MALICIOUS

PDF

11.8 KB
MD5: 302ba62bc763a606677d8519b83868da SHA-1: 6695f0faad917cfc01e0241ed174e96d41fced7b SHA-256: 99932fed6534cf174c9d091f538bfee392d91ee74a5c09e9c67a3be76aaea913
126 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The file is identified as malicious by multiple heuristics, including a critical ClamAV detection (Pdf.Exploit.Dropped-78) and a high ML classifier score. The presence of an embedded script payload and an embedded file strongly suggests it's designed to exploit vulnerabilities. While no specific document body content was extracted, the PDF structure and embedded artifacts point towards a malicious 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
bffe1f5aac28c669b0287c450cdd04e412e32cb9f551317cb488686d2a5cd7ba
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11302 bytes