Malicious PDF — malware analysis report

Static analysis result for SHA-256 4947f4bb8ed16b91…

MALICIOUS

PDF

81.8 KB
MD5: 19eb9a0f0435ecbe7d1b43dd3ebd2d2a SHA-1: d8958b22319eb31f17a1fb64363a6f183c13a21d SHA-256: 4947f4bb8ed16b9118bda2cfe91b8180858df094d169e3cb6ad325e5d2f7d203
156 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The sample is a PDF file that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The ClamAV detection 'Pdf.Exploit.Dropped-93' further confirms its malicious nature. The embedded file and script payload indicate that this PDF is designed to download and execute a second-stage malicious payload.

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
d069cdf7aebdc7b7c502457eb983f12a703e4b17652ee99faba3ab344d091259		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 83488 bytes

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