Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2775404afd40c4…

MALICIOUS

PDF

93.5 KB
MD5: 2df4a823a31f794fb373ff55c570e060 SHA-1: f9a21b71851a4b6164b0849e48a4a2fc879f5d12 SHA-256: 0e2775404afd40c462b7db95cfb166fa966130b5cc7080cf14c2b808da74ad02
176 Risk Score

Malware Insights

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

The file is a PDF that triggers a critical heuristic for CVE-2010-0188, an Adobe Reader XFA exploit. This exploit is designed to execute arbitrary code, which is often used to download and run additional malicious payloads. The ML classifier also strongly flagged the PDF as malicious. No document body text was available for analysis, but the exploit itself is sufficient evidence of malicious intent.

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
ec13e3a16f8f5a3804585b495d6b45b02c129da4c638f61a88a5952bbc38db28		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 95015 bytes

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