Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a58efe71ca49d8…

MALICIOUS

PDF

99.6 KB
MD5: 37926f1dc29d4bcd7fbbeaf1832a25c3 SHA-1: 0ac731766c25db68465128d54dfca8fdc6680170 SHA-256: 64a58efe71ca49d8629539b7bac7cb6841d3a800bf1b0db2c92fdc0981e79ee3
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 a machine learning classifier and heuristics. It exploits CVE-2010-0188, a known vulnerability in Adobe Reader's LibTIFF component, to achieve code execution. The presence of XFA forms and embedded script content suggests the exploit is designed to download and execute a secondary payload, although the specific script content is heavily obfuscated and truncated. The benign URLs present are likely decoys or standard XFA schema references.

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
3a403f3e7f0f0d7934a655acf16465264b585c0c235bfc29024d2d16216b7f4f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101200 bytes

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