Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8a121db49df6b3…

MALICIOUS

PDF

16.3 KB
MD5: 0a0f10518be2e7c07d897fba7cc498d1 SHA-1: 927d4a6b081d272511883816a5686858bf031e61 SHA-256: 7f8a121db49df6b3c0470767a7e60fcff3a83c94939d40e9896d828b60524a98
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution

The sample is a PDF file that leverages the CVE-2010-0188 vulnerability, which targets Adobe Reader's LibTIFF component. An XFA form with an embedded script is present, indicating the script is likely responsible for executing the exploit. The script is designed to download and execute a second-stage payload, leading to a compromise. The embedded URL is likely part of the exploit chain, though its reputation is unknown.

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
eb0cfaad6cd4b2dc508db2737a441206c3a226805bcf5364f70c77e59abd4663		 pdf-embedded-script PDF raw stream script payload at offset 0x359 15990 bytes

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