Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc36d067f2a6a59a…

MALICIOUS

PDF

86.5 KB
MD5: 5fd4a5233a5c8c05d337e4c3c1507a76 SHA-1: a25a9edcdf13a9f985f1a14077223a0bcc323cd0 SHA-256: dc36d067f2a6a59a187ef49ad3f104c7e775a01a9880617923b0788d844da9e1
248 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file that utilizes XFA (XML Forms Architecture) to deliver an exploit. Heuristics indicate the presence of an XFA heap spray and specifically identify the CVE-2010-0188 vulnerability, which targets Adobe Reader's LibTIFF component. This exploit likely leads to the execution of arbitrary code, as suggested by the embedded script payload and the ClamAV detection signature 'Pdf.Exploit.Agent-6136306-0'. The attack pattern is consistent with exploiting a known vulnerability in PDF readers to achieve initial code execution.

Heuristics 7

  • 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.
  • XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY
    PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
  • 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_0000023c.bin
7f962d03ea35cc82b9ccea8e70ab145aa5e77502a1e561d3d43a380ebd217ddd		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 87827 bytes

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