Malicious PDF — malware analysis report

Static analysis result for SHA-256 73cbc07c3a0be309…

MALICIOUS

PDF

93.3 KB
MD5: 7972312899e013ce8580d5fdbeb9f603 SHA-1: 7f21a64d153903bf527968504702ce99edc41f47 SHA-256: 73cbc07c3a0be309ae04431a06922d496cf58510901b5981667a2dd6eb8caf6f
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF sample contains embedded XFA content and triggers the CVE-2010-0188 exploit, indicating it's designed to execute code upon opening in a vulnerable Adobe Reader version. While no specific second-stage payload was directly observed, the exploit's nature strongly suggests an intent to download and run additional malicious content. The embedded script, though obfuscated, further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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 script payload in PDF stream low 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 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
34c42e58899b32cdf9f282f6fc946cba80e92750bbd94fdd3a8c97549e6bc156		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 94777 bytes

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