Malicious PDF — malware analysis report

Static analysis result for SHA-256 e10f8be9f580c65b…

MALICIOUS

PDF

111.1 KB
MD5: cb0fd984fb5b647bac74097f98b2fa0a SHA-1: 1b11b52d34c2eb896cd87027d4e68e87b6da868d SHA-256: e10f8be9f580c65b1be7ed5b564e27ae5e3bf8df4570fc8b0df60e01a581999c
248 Risk Score

Malware Insights

The PDF file contains XFA (XML Forms Architecture) content which is known to be a vector for exploits. Specifically, the heuristics indicate a heap spray exploit targeting CVE-2010-0188, which is an Adobe Reader vulnerability. The embedded script payload and XFA script further confirm the malicious intent to execute arbitrary code upon opening the document. The embedded URLs, while not directly malicious, are related to XFA specifications.

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_0000023d.bin
d74957e678f977892d859ddba3ecba7798ac84bac6e85c3dea06a28bc35f9cab		 pdf-embedded-script PDF raw stream script payload at offset 0x23D 113051 bytes

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