Malicious PDF — malware analysis report

Static analysis result for SHA-256 c457adf6deb43176…

MALICIOUS

PDF

90.0 KB
MD5: d3014cbc4df64f934556048be9364fe6 SHA-1: b1e377358a47cd0b40e10c45568fe0bfe25593cd SHA-256: c457adf6deb43176a61c5ebf8d5ac81bbb8f1523d40df8f00016f409b3045758
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 a heap-spray exploit targeting CVE-2010-0188 in Adobe Reader. The embedded script within the XFA form is responsible for executing this exploit, which likely leads to arbitrary code execution. The ClamAV detection further confirms its malicious nature. No specific family could be identified, but the attack pattern is consistent with exploit delivery via a vulnerable PDF reader.

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
c03109b7a50016ebba4b12f3b9c0ae5075afa297e269a7fc9c7b93462e291854		 pdf-embedded-script PDF raw stream script payload at offset 0x23C 91488 bytes

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