Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f56c4f66f07727a…

MALICIOUS

PDF

79.1 KB
MD5: 678e4d7121e77f85cfd20a60d0bbf6bf SHA-1: d59fa4690e3b6bf01aa99666dbda719142df88c0 SHA-256: 5f56c4f66f07727a75ac467ba34d3b7b8445522fe60ec88c04cdd0bd68b981a2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file identified as malicious, exploiting CVE-2010-0188 via XFA forms. The embedded script, likely JavaScript, is designed to execute arbitrary code, which is a common technique for delivering secondary payloads. The benign URLs found do not detract from the malicious nature indicated by the exploit and script.

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.
  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • 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/ In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
225053457eadadd85d7009e6e8ddececc7637e87e87e618ce4309cde35ff4e34		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80240 bytes

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