Malicious PDF — malware analysis report

Static analysis result for SHA-256 16348dad02eeaa5f…

MALICIOUS

PDF

79.2 KB
MD5: 62fb672428d11a938667cc54e9f0b554 SHA-1: d8d00c592a2c400b97a17fac5de6e7484a8f259e SHA-256: 16348dad02eeaa5fa9cbb19ce83658ef7d7429d667c8b99e1c533a61421a8532
116 Risk Score

Malware Insights

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

This PDF file is identified as malicious due to the critical heuristic firing for CVE-2010-0188, an exploit targeting Adobe Reader's XFA forms. The embedded script payload and ML classifier further support its malicious nature. The exploit likely facilitates the execution of a secondary payload, although the specific nature of that payload is 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
e803cde73b45ea56259651d6a7303c20b87dd0e1562866efeb95278ca76b12c1		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80367 bytes

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