Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db34f1497db7e71…

MALICIOUS

PDF

16.3 KB
MD5: accd56124ab2992c67a67805a6b0e85a SHA-1: d6f3d7887ea7d65b84216e9dfd3975c99124128a SHA-256: 8db34f1497db7e715b2000be2a773c016a3983ce4182a8de01d386f053f7fa78
188 Risk Score

Malware Insights

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

The file is a PDF document that leverages the CVE-2010-0188 vulnerability in Adobe Reader via an XFA form. This exploit is designed to execute embedded scripts, which in turn likely download and execute a secondary payload. The embedded script payload is substantial, indicating complex malicious activity. The presence of an embedded URL, though not directly malicious in reputation, is a common vector for further infection.

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.
  • 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.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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.
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000359.bin
68a7efc9797f3220c354c05cef76d78c2e0732cee9012070ebb7d10d3967b272		 pdf-embedded-script PDF raw stream script payload at offset 0x359 15917 bytes

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