Malicious PDF — malware analysis report

Static analysis result for SHA-256 82490625e50d589f…

MALICIOUS

PDF

111.1 KB
MD5: 2554b75c13b16ef26d13557a64e50af4 SHA-1: 27361a6dfcf9f5dc46256d8f7066023f96685adf SHA-256: 82490625e50d589ffef11f2cf78d8e6810653d1203b520998a8aa426fecc3987
250 Risk Score

Malware Insights

The PDF file contains XFA (XML Forms Architecture) content, which is known to be a vector for exploits. Heuristics indicate the presence of heap spray and exploit code targeting CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF processing. This exploit code is embedded within an XFA script, designed to execute arbitrary code upon opening the document. No specific malware family could be identified, but the attack pattern is consistent with a targeted exploit delivery.

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_0000023b.bin
d8781ec956159b62900a92c07d44fdfa1493cbf4692437e269a973ec2640862b		 pdf-embedded-script PDF raw stream script payload at offset 0x23B 113053 bytes

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