Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1a34a5f179680b…

MALICIOUS

PDF

79.6 KB
MD5: b2a97532ffd9addcf3fa6359b36e4d57 SHA-1: 11081577169d3be26f5574d71cad55e668db45f6 SHA-256: ec1a34a5f179680ba7e8f46fddda1a5ed11a6536877a672cb8ce02dfe32046eb
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.001 Phishing: Spearphishing Attachment T1204 User Execution

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting Adobe Reader's XFA form processing. The embedded script payload, detected by ClamAV as Pdf.Exploit.Agent-6136306-0, is indicative of a malicious downloader or dropper. The exploit likely aims to execute arbitrary code upon opening the document.

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://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_pdf_script_00000288.bin
870ef9d4fb8fcce37e99428554f5558d7fef2eaf5d30a34ef75d55a9c6b79f2b		 pdf-embedded-script PDF raw stream script payload at offset 0x288 80788 bytes

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