Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fcba96280533ef9…

MALICIOUS

PDF

50.2 KB
MD5: bdcaeb78e23feedf7d8dbe66beb13a2a SHA-1: 0101ab59bbad8226297ffef930564b7c5748d515 SHA-256: 0fcba96280533ef9b7fc38a091a9e8da7791b6180af3dceb079ad7eb312fa937
216 Risk Score

Malware Insights

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

The file is a PDF document that contains an XFA form which triggers the CVE-2010-0188 exploit. This exploit is designed to execute arbitrary code, likely a second-stage payload, as indicated by the 'Pdf.Exploit.Dropped-93' ClamAV detection and the ML classifier score. No specific script content was directly readable, but the presence of XFA and embedded file objects strongly suggests an exploit execution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • ClamAV: Pdf.Exploit.Dropped-93 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-93
  • 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
2376489ab64f55e6ddc9815774360ca1d9fab7215958f9454b6f01d9d504b0c8		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 50637 bytes

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