Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7dfdb9bb927cbb…

MALICIOUS

PDF

12.7 KB
MD5: 67bce232826aaf20bc9040c6d3051191 SHA-1: 1f0dc4a6f0232b9cd0b3521bf077132350486a0d SHA-256: 2b7dfdb9bb927cbb3dac604026968b7683d9fe68c2f69bdd14a0d9f08c3438db
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter

The file is a PDF document that leverages XFA forms and is detected as exploiting CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF component. An embedded script was also found, indicating the potential for further malicious actions. The embedded URL, while seemingly benign, is associated with the XFA template schema and could be 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_00000359.bin
49cc113e8245c9d8a50c8f8eb0b04dc320e488a2cfaa9381225ccf508a8313ad		 pdf-embedded-script PDF raw stream script payload at offset 0x359 12271 bytes

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