Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d45ffd38f29c0d…

MALICIOUS

PDF

50.8 KB
MD5: fc07bdf39ab41c03faeb7592a3320762 SHA-1: 0fd9cf7150bcb6444b7133801125e8ced8b3395d SHA-256: 96d45ffd38f29c0d2e03f2f7b044835175a7d8f52e0bbd951d8de3012b766232
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter

The sample is a PDF document that leverages the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. This exploit is designed to download and execute a malicious payload. The presence of XFA forms and embedded script markers further indicates malicious intent. The document body content is heavily obfuscated and does not provide direct clues to the user-facing lure.

Heuristics 7

  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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_file_obj0008.bin
2f81707b34e94d4e173cf40519b62e3e2b6a1708a7e906769a86ff5a99b4fc11		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 51217 bytes

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