Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6fba693dbeacfc9…

MALICIOUS

PDF

81.8 KB
MD5: 05e0fa5eb5d98ce987f14f64457300c0 SHA-1: 2c14fa78fc9896b6db5ff4de97953cea441fc0b6 SHA-256: a6fba693dbeacfc9acd965e7a127847ac1c4bb7dd016cd49bdf3620688516c61
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains an embedded exploit targeting CVE-2010-0188 in Adobe Reader's LibTIFF XFA image processing. This exploit is designed to execute arbitrary code, as indicated by the ClamAV detection 'Pdf.Exploit.Dropped-93'. The embedded script payload further suggests the intent to download and execute a secondary stage. The document body content is heavily obfuscated and does not provide clear user-facing lures.

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.
  • 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
ab1172afeb02985f85ec7bfe1fbdd8ac569562310de2dbe932486688b8d7ebfb		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 83503 bytes

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