Malicious PDF — malware analysis report

Static analysis result for SHA-256 857c85322c943994…

MALICIOUS

PDF

51.1 KB
MD5: 403b2b60d7c7e4d2d22efc1d31a814ed SHA-1: 37bd292f3c850017d6bf1eea33a5ae4629d08aff SHA-256: 857c85322c943994a58d6746c43517a0f77b11fd6f01a9905629a1c8a7e0e687
176 Risk Score

Malware Insights

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

The sample is a PDF document that triggers a critical vulnerability, CVE-2010-0188, related to Adobe Reader's handling of XFA forms. This exploit is designed to execute arbitrary code, indicating a malicious intent to compromise the user's system. The ClamAV detection further confirms its malicious nature as Pdf.Exploit.Agent-6136306-0.

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.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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
aba8ae88665704b2524f5ead51a7acbb87d0b95db6943f60846893f1d4ca3d82		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 51571 bytes

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