Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e12f43eeeb4c77…

MALICIOUS

PDF

99.7 KB
MD5: 587359fd14f1033dce2909e1c38fd60a SHA-1: 1f6dc072f8d81a1175bd3edd7b0442bab1f0d9a9 SHA-256: 33e12f43eeeb4c77b46b21555c952259014eb08dd9b7decae73f8be543033e77
116 Risk Score

Malware Insights

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

The PDF file contains embedded XFA content and triggers the CVE-2010-0188 exploit, which is known to be used for arbitrary code execution. This exploit is likely used to download and execute a secondary payload. No specific family could be identified, but the exploit vector is clear.

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
361b157e30e2a274f639a198386ed5697d6241339dc19ceb418c20796f1f839b
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101385 bytes