Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe8312c127eeb85…

MALICIOUS

PDF

102.0 KB
MD5: aeaa0b39fc4a83d73225ebe9d4aa5c9c SHA-1: 3631b752b7759182fd516e16985cf29d1fea1cc3 SHA-256: ffe8312c127eeb855233df5fa9dc0266fb6641ef2cd561f4655560268ecfc782
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting Adobe Reader's XFA form processing. The embedded script payload, detected by heuristics, is indicative of an exploit designed to execute arbitrary code. The presence of an embedded URL, though not directly malicious in reputation, is part of the exploit chain.

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_00000346.bin
2553720063badd0a74aebab91e060e725909d25fc8864944537ae895dfa6bb39		 pdf-embedded-script PDF raw stream script payload at offset 0x346 103736 bytes

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