Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af90a7008ab1643…

MALICIOUS

PDF

59.9 KB
MD5: 2fbabfc115a7101a0ae48636c278ce26 SHA-1: 5e778cc51666f70b4e231a5d88b24e7c9410eaf5 SHA-256: 6af90a7008ab1643fa6db289175bd2d3cb649d33eee56dfb27c9eb8bfaf729da
156 Risk Score

Malware Insights

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

The PDF file contains embedded XFA (XML Forms Architecture) content which is known to be a vector for exploits. Specifically, the CVE-2010-0188 heuristic indicates a vulnerability in Adobe Reader's LibTIFF processing within XFA forms. The embedded script payload and XFA script firings suggest that this exploit is used to execute malicious JavaScript, likely to download and execute a second-stage payload. No specific malware family could be identified.

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
8a1d2054ec4d9f869d2b5453886d2a67db4096e59cb738326d518ad55ec7903d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 60570 bytes

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