Malicious PDF — malware analysis report

Static analysis result for SHA-256 9df4ce508b30d029…

MALICIOUS

PDF

111.3 KB
MD5: e00dc943b645d51bd35ab2bed5fc1fc1 SHA-1: 8c62a39e78fcd3f05bf57a63e709c94b954df697 SHA-256: 9df4ce508b30d029a1fa6d47210be2c6dade71e62801dbd9d929c98142c51083
190 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter

The PDF file contains an XFA form with an embedded script, which is indicative of an exploit. The heuristic firings confirm the use of CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. This exploit likely leads to the execution of the embedded script, which is designed to download and execute a second-stage payload. The embedded URLs are likely related to the exploit or payload delivery.

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://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_pdf_script_00000238.bin
a7428fe14cef72b2ed9963499c0e7ce7bc3ad71342cf1444532a0bbd22295bea		 pdf-embedded-script PDF raw stream script payload at offset 0x238 113271 bytes

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