Malicious PDF — malware analysis report

Static analysis result for SHA-256 683a40364e07bd2e…

MALICIOUS

PDF

76.1 KB
MD5: 305ab263366a523b485c664fe9789e9d SHA-1: d4192d850b0a7d2a962c35003a2097d218ebf70c SHA-256: 683a40364e07bd2e73f7b5e77b0043c0615c5aeca2727f6a4dd55111b3460c1f
176 Risk Score

Malware Insights

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

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, which is a critical finding indicating client-side exploitation. The presence of XFA forms and embedded script payloads further supports this. The exploit likely facilitates the execution of a secondary payload, as suggested by the ClamAV detection name 'Pdf.Exploit.Dropped-78'. No specific malware family could be identified.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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
19e93993f610ac3f512d7c6bcbed6705485c18458e12b4a3226a596a01438fdc		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 77204 bytes

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