Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3cbb3a99bcbd03…

MALICIOUS

PDF

82.1 KB
MD5: 060a58649222ba6a1c9ad35d4107f628 SHA-1: d92fc754cd5c74cd7267c2b3b696f1ef17c3d75e SHA-256: 2d3cbb3a99bcbd03ea5fb2c69544dbd44eb546f7f08f08c7f5c6049fdd1a6a76
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059 Command and Scripting Interpreter

The PDF file contains embedded XFA forms and scripts, triggering critical heuristics for CVE-2010-0188, an Adobe Reader exploit. ClamAV also detected it as Pdf.Exploit.Dropped-93. The embedded script payload is likely responsible for downloading and executing a second-stage payload, although the specific details are obfuscated. The presence of an embedded file further supports the malicious nature of this document.

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
c28ed7849c77af4b7cd1e0565cc420fc6220ef1dd9a963d982584c0f0c7d8af2		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 83313 bytes

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