Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bed9989baa2d1c2…

MALICIOUS

PDF

102.2 KB
MD5: 1a0708b142629b2df91a85dd40dcd0c7 SHA-1: f97827056e03520b4fb3ab9f80892055b9f882c2 SHA-256: 0bed9989baa2d1c24037c1b0784b54d6a42a0850906a92d5f95236cbba75668a
168 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file identified as malicious by multiple heuristics, including a critical finding for CVE-2010-0188, an Adobe Reader exploit. An embedded script, identified as JavaScript, is present and likely responsible for executing the exploit. The script's content is heavily obfuscated, but its presence within an exploit context strongly suggests it's designed to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low 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 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_00000346.bin
0920f61311dbd523a1b17fc48b0a4b35521f325eb05e2c55ed49f1ddc6c16985		 pdf-embedded-script PDF raw stream script payload at offset 0x346 103877 bytes

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