Malicious PDF — malware analysis report

Static analysis result for SHA-256 741ee5a0c9d0020c…

MALICIOUS

PDF

99.7 KB
MD5: 578e8da2e3cbc2fadce2a48e061dbe0b SHA-1: f35f7fa5d2c7154b1fab7d521f1a459d31876ed1 SHA-256: 741ee5a0c9d0020c884348af282734e59fb9ee3dd11170bc833d4bca5e4f9163
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by an ML classifier and contains a critical heuristic for CVE-2010-0188, an Adobe Reader LibTIFF XFA exploit. This indicates the PDF is designed to exploit a vulnerability in older versions of Adobe Reader to gain execution. The presence of embedded script payloads and XFA forms further supports this attack vector. The benign URLs extracted are likely unrelated to the malicious functionality.

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
d90435104a5f64722a04bf8f96cef01f0a9604ff87a83c4347776186151bb1f4		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101369 bytes

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