Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ea912c3048f02a…

MALICIOUS

PDF

93.6 KB
MD5: 2b2e37691fd385bdc46df801070123ae SHA-1: 5271f50aa53de43c6b9afd3b55b4bf18382577b5 SHA-256: 01ea912c3048f02aec6c16adf2c4668512f4429f16fb52cd5b47f7a31184e536
188 Risk Score

Malware Insights

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

The file is a PDF that leverages the CVE-2010-0188 exploit targeting Adobe Reader's XFA forms. This exploit is designed to execute arbitrary code, indicated by the critical heuristic firing for the exploit and the embedded file. The ML classifier strongly supports the malicious nature of the file, suggesting it's a dropper for a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • Embedded script payload in PDF stream medium 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 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 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
7d2a1b06406ca5777a2adb5a5006fa6390a0517ba69f1c482e1b00b3d0643dba		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 95091 bytes

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