Malicious PDF — malware analysis report

Static analysis result for SHA-256 04517b1e11eff2c2…

MALICIOUS

PDF

90.9 KB
MD5: 42c704f9f7284c867a2c85c070d05fee SHA-1: 39ed054f54841e3f64e333694cf71f0b7ad10e62 SHA-256: 04517b1e11eff2c2571de129138663672edf864f79ea3ad45390aea6afc5c9eb
176 Risk Score

Malware Insights

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

The file is a PDF document that exploits the CVE-2010-0188 vulnerability in Adobe Reader's XFA form processing. This exploit is designed to download and execute a second-stage payload, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' and 'ML_NYX_PDF_MALICIOUS' heuristics. The ClamAV detection 'Pdf.Exploit.Dropped-78' further confirms its malicious nature.

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 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
f5ce85e510275bc49b0335519a25336c26510fd8d83019f35040925d594dbb20		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 92308 bytes

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