Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d756519a23474ad…

MALICIOUS

PDF

99.7 KB
MD5: 64a9e516aa954356df6e09e5e39c0c67 SHA-1: e9c54fd51099c70c45094b71c7719885c3c0c0d1 SHA-256: 6d756519a23474ada61d5d602b2b3fc231743b440e0fc32acc323c3948c76681
116 Risk Score

Malware Insights

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

The sample is a PDF file that exploits the CVE-2010-0188 vulnerability in Adobe Reader's XFA form processing. This exploit is designed to achieve arbitrary code execution, which is commonly used to download and execute further malicious content. The presence of an embedded file and script payload further supports this attack vector.

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
18f1fe09945ad7b0850785364c40eeb39bec08152ad2a3d5a5bc1aa18cae3674		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101310 bytes

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