Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdc039d0e0bd9594…

MALICIOUS

PDF

111.3 KB
MD5: e2652d4bb1d9d3f21d4b4a861d12c1e3 SHA-1: 117361e9ecf133a74c4bc0234cd868a54b184d7e SHA-256: cdc039d0e0bd9594dd9a5ee84c37ccfdc86146379b28b8ffb9fd132df3869bac
190 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.007 JavaScript T1059.004 Python

The PDF file contains an XFA form and triggers a critical heuristic for CVE-2010-0188, indicating an exploit targeting Adobe Reader. An embedded script payload was also detected within a PDF stream. The ClamAV detection 'Pdf.Exploit.Agent-6136306-0' further confirms its malicious nature. The document body content is highly obfuscated and does not provide clear user-facing text, but the presence of the exploit and embedded script strongly suggests the intent is to deliver and execute a secondary 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://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_00000238.bin
d2c8c25e64c388f9f715be4cd20155b3d20822d2b3dd0eb6f0609be3e4831d0c		 pdf-embedded-script PDF raw stream script payload at offset 0x238 113273 bytes

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