Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dec0a9a5caeb67a…

MALICIOUS

PDF

59.5 KB
MD5: 539106871c639bd52eb4f7f186554913 SHA-1: a744f6f9d54c89f4c7872fbf107cf315d905914d SHA-256: 0dec0a9a5caeb67afa395a6455c823f749cba2b646dce74fcd1cdad140c567ff
156 Risk Score

Malware Insights

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

The PDF sample contains an XFA form which is known to be vulnerable to CVE-2010-0188, an exploit targeting Adobe Reader's LibTIFF component. This exploit allows for arbitrary code execution, and the presence of embedded script payloads confirms the intent to leverage this vulnerability. The ML classifier strongly indicates maliciousness, and while no specific family is identified, the exploit mechanism is clear.

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
4e0f49eca043c1e4e513de8c3e3f0971a416f3c7a0eabc00c81af4e469811be8		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 60187 bytes

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