Malicious PDF — malware analysis report

Static analysis result for SHA-256 11bf6af96d4fc0bd…

MALICIOUS

PDF

99.9 KB
MD5: 2a781526f72cb153c5f39a44b35eb06c SHA-1: b7f7c147edb78ede0a38fd3229bb72f4dd7d8d61 SHA-256: 11bf6af96d4fc0bdaed5b0ba8fd6c7bbc08e99cd8cbaa0ccc876d6736572f481
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains an embedded script payload and triggers the CVE-2010-0188 exploit, which is known to facilitate arbitrary code execution. This indicates the file is designed to exploit vulnerabilities in PDF readers. The embedded file and script suggest a downloader or dropper functionality, aiming to execute further malicious code.

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
df53b7758c911948252031bc27f0f2bafe052e3859c30408c9e7831f4816f4b8		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101523 bytes

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