Malicious PDF — malware analysis report

Static analysis result for SHA-256 beac696649e22057…

MALICIOUS

PDF

16.3 KB
MD5: b23c19a46afe01d5cf7eceeafdd92bec SHA-1: 29b5bc6481b92c41048d7c76397ff9c18abea76e SHA-256: beac696649e22057934274f73d27e1ea3266e9a6554fce2bd4f87153ec294a98
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting Adobe Reader's XFA form processing. Heuristics indicate an embedded script payload within an XFA form, strongly suggesting the exploitation of this vulnerability to execute arbitrary code. The embedded script is likely responsible for downloading and executing a second-stage 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.
  • 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
687e91cb4f87faeff7b33c32d8288cfcc592322d3955d3bc0e521edf19025696		 pdf-embedded-script PDF raw stream script payload at offset 0x359 15944 bytes

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