Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef42e084c4d1b0b1…

MALICIOUS

PDF

102.4 KB
MD5: 93cfc4ce19fb16f02adc564097c75823 SHA-1: eca88fbbc9ca8300a9c4ac84b096d1dbc2d5a277 SHA-256: ef42e084c4d1b0b180baa5f87e7ba15c8e6e861f36093f2f2db73935f375f113
188 Risk Score

Malware Insights

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

The file is a PDF document 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, indicates the file is designed to execute malicious code upon opening. The exploit targets a known vulnerability, making the attack pattern clear.

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_00000346.bin
36cbcb04a15c14bbcfb5f78da965d67ba4ba82aef8745c30fcbaf850f51f3a3c		 pdf-embedded-script PDF raw stream script payload at offset 0x346 104135 bytes

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