Malicious PDF — malware analysis report

Static analysis result for SHA-256 032bf536d58d7ec9…

MALICIOUS

PDF

79.4 KB
MD5: 317f1d6e525a558f1da55313771d935c SHA-1: eaed31cb003ba6aaf0b0d84d714dbaaed1e77ed0 SHA-256: 032bf536d58d7ec9c9cda663d236707a9fd5dd802d3c335b65337a01d490210f
116 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by an ML classifier. It contains an embedded XFA form that exploits CVE-2010-0188 in Adobe Reader, a known vulnerability for client-side code execution. The exploit likely serves to download and execute a secondary payload, indicated by the embedded script payload marker.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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
27bdebe7c851c1d5eadb4eb6f7efb29d8dbf36b294ef8ec0864f23f7b3680ff2
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80565 bytes