Malicious PDF — malware analysis report

Static analysis result for SHA-256 159e5b3b7a1052cd…

MALICIOUS

PDF

99.8 KB
MD5: 387fa366988d46de61050b6e85348ab4 SHA-1: f493dc8b92f17229d0f64647c1c05d6dc11c6ee7 SHA-256: 159e5b3b7a1052cd24eb509600d2e85591096f2ff1ef7325b0388a85e43a029e
116 Risk Score

Malware Insights

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

The PDF sample contains embedded content and triggers the CVE-2010-0188 exploit, indicating it's designed to execute arbitrary code. The presence of XFA forms and embedded script payloads further supports this. While the exact nature of the secondary payload is not clear from the static analysis, the exploit's primary purpose is likely to download and execute additional malicious content.

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
82e2f6789f2cd42a1096f9f076a3271cf4182ca3b294b979b4a59fe48c1aec13		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101479 bytes

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