Malicious PDF — malware analysis report

Static analysis result for SHA-256 795bce9780b64ac9…

MALICIOUS

PDF

100.0 KB
MD5: b87a5f34e75b596178f192fdfe59658c SHA-1: 04dc553ad73adf749fb9896dbf4eff16f3f27d49 SHA-256: 795bce9780b64ac9da197c2a6565e6d78a61c6365ad93846acd8d12003d0313f
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader's handling of XFA forms and TIFF images. This exploit is designed to achieve arbitrary code execution. The presence of an embedded file and the ML classifier's high confidence indicate a malicious intent, likely to download and execute a secondary payload.

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
d27ed4c3c8ed2b6ddacdbfb2e3519d2c16f7fb1c6ba7e7d39bb356bbea775690
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101610 bytes