Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e4fc1d544281ec9…

MALICIOUS

PDF

86.9 KB
MD5: f286872c17c06811cd1bce9aa2804e01 SHA-1: d4f05e279594f181b1bf997ee31ec0211aaa0b3c SHA-256: 5e4fc1d544281ec95e4a1fd415dfe4ef28f6da5129fa87f2670ac63899858a52
176 Risk Score

Malware Insights

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

This PDF file is identified as malicious due to the critical CVE-2010-0188 heuristic, indicating an exploit targeting Adobe Reader's XFA forms. The presence of an embedded script payload and ML classification further supports its malicious nature. The exploit likely facilitates the execution of a secondary payload, as suggested by the ClamAV detection name 'Pdf.Exploit.Dropped-78'.

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
1982557091f52f0b6560594da906105c328e00c2706007b8ca7d756f88b60393		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 88261 bytes

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