Malicious PDF — malware analysis report

Static analysis result for SHA-256 27da8e15891b24ad…

MALICIOUS

PDF

16.3 KB
MD5: 2b325946b76fc34962aca0b56fddf21b SHA-1: 0d1a6f5d4522d834583a724e582dd6c0f6b65e8f SHA-256: 27da8e15891b24adab0b7c181de901c9ecf77c3fab09b33b77fbc6982d9b73ad
190 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF file that leverages the CVE-2010-0188 vulnerability in Adobe Reader's XFA form processing. This exploit allows for the execution of arbitrary code. An embedded script payload was detected within the XFA form, indicating the likely intent to download and execute a second-stage payload. The ClamAV signature 'Pdf.Exploit.Agent-6136306-0' further confirms its malicious nature.

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
19a1136ecaa23e71486af1761009d2f09adb2c6977232adaac48ef6e0e0d8368		 pdf-embedded-script PDF raw stream script payload at offset 0x359 15912 bytes

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