Malicious PDF — malware analysis report

Static analysis result for SHA-256 133a703050edb7d4…

MALICIOUS

PDF

100.0 KB
MD5: 7c68e8d409e5914a1866452b1a53eba4 SHA-1: 1ee8033579550587af63822404b8fa84499744e6 SHA-256: 133a703050edb7d44c678b6c5c4286af31b881890e87dc0aa4ad419bc3f42f24
116 Risk Score

Malware Insights

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

The PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component, allowing for the execution of arbitrary code. The presence of embedded scripts and the ML classifier's high confidence score indicate malicious intent. The exploit likely serves as a dropper for a secondary payload, though the specific payload and delivery mechanism are not detailed in the provided evidence.

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
2b5506820709dbf9f68bcbdf279f302ac997cc1290ef1f7a51f64f3e2946e041		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101677 bytes

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