Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde05e59159602e1…

MALICIOUS

PDF

12.8 KB
MD5: 92e5807c55106d7fcb16358c4cf7ce64 SHA-1: c34bbfa74c61059f7acb711673e6c0177a8cea93 SHA-256: fde05e59159602e17f2fe04a7a507674ec0f4a47b3ccfc2eb20268c53dd98680
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The sample is a PDF file that leverages the XFA (XML Forms Architecture) feature to exploit CVE-2010-0188 in Adobe Reader. The heuristic firings indicate an embedded script payload within an XFA form, which is characteristic of exploit delivery. The embedded URL, while not directly malicious in reputation, is part of the XFA structure. The ClamAV detection further confirms its malicious nature as Pdf.Exploit.Agent-6136306-0.

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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000384.bin
0e18558eca2243c00aff1bea5a19e50ef98f3ad97aac2fcb92c6b263f513d8a2		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12288 bytes

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