Malicious PDF — malware analysis report

Static analysis result for SHA-256 180eca6dde625922…

MALICIOUS

PDF

63.6 KB
MD5: cda715428333996b6c57b4c478184fd4 SHA-1: 314fa4d8a0d83409deb10273d228d2b719446e7d SHA-256: 180eca6dde625922e204be4a8a940b9521b61fca19a96e5fb4627e3ee764cab1
156 Risk Score

Malware Insights

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

The PDF file contains an XFA form with embedded JavaScript, which is flagged as risky. Heuristics indicate exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component, allowing for client-side code execution. The embedded script likely serves to download and execute a secondary payload, although the script itself is obfuscated.

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/
    • 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
8291af247e12bc9d3485bdf32119e43e9dcd561e70726156b55d63547b09f522		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 64398 bytes

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