Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ffa3789d33ff984…

MALICIOUS

PDF

99.7 KB
MD5: 833864efad3cda5c550191185fb3ae56 SHA-1: 978fac5a6233325aa384d889c6952b99eccf95d8 SHA-256: 0ffa3789d33ff98417dffc09ddb99fab3b16aea326b843c30be939daf7cec6ea
116 Risk Score

Malware Insights

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

The sample is a PDF document that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This exploit is designed to execute arbitrary code, which is often used to download and run additional malicious payloads. While the embedded JavaScript is heavily obfuscated, its presence alongside the exploit indicates a likely intent to compromise the user's system. The benign URLs present do not detract from the malicious nature of the exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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
517b773fabc47ee383432e2e07f6bcfdd83dc29514d86e18ab9da50eb036807b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101380 bytes

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