Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ef9c9db6e34e8b…

MALICIOUS

PDF

11.8 KB
MD5: 8150d37b5694b0d8375f470e9ffb08dd SHA-1: 4852458ab13c912e62c08a1826158cdde702afb6 SHA-256: 67ef9c9db6e34e8ba8dffd92f5eb1a06411baf7c29f136605740ef20b50a4611
176 Risk Score

Malware Insights

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

The PDF file contains an embedded XFA form and triggers a critical heuristic for CVE-2010-0188, indicating exploitation of Adobe Reader. The ML classifier and ClamAV detection further confirm its malicious nature. The embedded file and script payload suggest it's designed to download and execute a secondary stage.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • 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
89e099f493521bfbccd4bf44c2c298187ec344b2ef3eaa8327287f30a99bd905		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11374 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.