Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1b4f3992355f9c…

MALICIOUS

PDF

16.2 KB
MD5: 7a94ccd0477f98bd2240b0341e5c7452 SHA-1: 013fa733f72e3b27ea86b6c781831e97ba8edb37 SHA-256: fc1b4f3992355f9c30e8052fa632d74e919e636bab3e802f25167732dd1f8030
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains an XFA form that leverages the CVE-2010-0188 exploit targeting Adobe Reader. This exploit is designed to download and execute a second-stage payload. The embedded script within the XFA form is the mechanism for this execution, although its specific actions are not detailed in the provided evidence. The presence of an embedded URL further supports the delivery of malicious content.

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.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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.
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000359.bin
df29162958f907fa0306e50221cce5fe646f5d43dbfc702114201a9d252728c9		 pdf-embedded-script PDF raw stream script payload at offset 0x359 15885 bytes

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