Malicious PDF — malware analysis report

Static analysis result for SHA-256 e625a2a34ba11a38…

MALICIOUS

PDF

16.1 KB
MD5: c2555aab646350b627d115cfb2d11adc SHA-1: 845499b473a097c365dc011059b2ec978c5cd3f5 SHA-256: e625a2a34ba11a3860d2f47a0da92dd9955ca6f0bb61940df48aab68c22ee15e
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The PDF file contains an XFA form which is exploited using CVE-2010-0188, a known vulnerability in Adobe Reader's handling of LibTIFF images within XFA forms. This exploit likely leads to the execution of an embedded script payload, which is a common technique for delivering further malicious content. The embedded URL is likely part of the exploit chain or payload delivery mechanism.

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_00000354.bin
4e21b21357788aa0e34b0d22287c7b9d803f6e0715e7950d06cf23ecd0db2d7a		 pdf-embedded-script PDF raw stream script payload at offset 0x354 15752 bytes

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