Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cb2f6092c5a35bd…

MALICIOUS

PDF

4.3 KB Created: 2011-04-05 23:46:28 Authoring application: bub lob
MD5: f1ee0db70f40da3b19083ae35604d206 SHA-1: 9dece6156dfa7f3ebdc1bddf3faa828e538c7222 SHA-256: 0cb2f6092c5a35bdd4bf41fba50d82d34fb284c21171f0260f4616bffe4a3e45
158 Risk Score

Malware Insights

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

The PDF file contains a critical vulnerability (CVE-2010-0188) related to Adobe Reader's handling of XFA forms and LibTIFF. This exploit is designed to execute arbitrary code, indicated by the presence of embedded script payloads. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it's intended to deliver a secondary stage.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • 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.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
2b4f03c6ed2a007521668c2a39bb5952b5f06a0938b9dab9ec72ce7fdbe9fa14
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x169 13117 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).