Malicious PDF — malware analysis report

Static analysis result for SHA-256 1120e5187fdbece0…

MALICIOUS

PDF

123.9 KB
MD5: 6f7513b6fd24a61e10212f2d04e45368 SHA-1: 9dbb61597d3470699d33fa0a82d59b5858eda6a7 SHA-256: 1120e5187fdbece0380c8eadfcfb1b2549591ffa7bb48c02bb4e4447dfb21208
176 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 form processing. The presence of an embedded script payload and the ML classifier's high confidence score further support this assessment. The exploit likely facilitates the execution of a secondary payload, as indicated by the 'Pdf.Exploit.Dropped-78' ClamAV detection.

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
03f7217c7e9b08fc23cc6d305f34567ccb9918059f2757fbc749c47b696045fb		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 126113 bytes

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