Malicious PDF — malware analysis report

Static analysis result for SHA-256 d11d60988541cc86…

MALICIOUS

PDF

82.6 KB
MD5: 5148d2fb558696802a7b4d0998f3ca53 SHA-1: b0c231c41a3f8563e832dbffd20cc3c7d6b09368 SHA-256: d11d60988541cc868c76cfa88c81b72c25cd7c69ed3a04e949b85534f8d4a023
196 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Phishing: Spearphishing Attachment

This PDF document exploits the CVE-2010-0188 vulnerability in Adobe Reader's handling of XFA forms and LibTIFF images. The embedded script payload within the XFA form is designed to execute malicious code, as indicated by the critical ClamAV detection and heuristic firings. The primary attack vector is likely through social engineering, leveraging the PDF document as an initial entry point.

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.
  • ClamAV: Pdf.Exploit.Dropped-93 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-93
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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_file_obj0008.bin
8170d2a1d188f87b8483573d9c3c1a1aa8b19262bb2dab0cc3674f24897d9c93		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 83851 bytes

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