Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e3973bc020c450…

MALICIOUS

PDF

2.6 KB
MD5: 8b59e56fc0d3bb19354601990b874c76 SHA-1: d9c3e76e7510b12b0693da59c0360422699f2e56 SHA-256: 00e3973bc020c450bc209dddeb1c3f4eebf8bfa427b066fc98ca77080b6c8cd8
170 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1204.001 Malicious File: User Execution: Malicious Link

The PDF file contains an embedded XFA form that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF processing. This exploit is designed to download and execute a secondary payload, as indicated by the 'Pdf.Exploit.Dropped-90' ClamAV detection and the ML classifier's high confidence score. The embedded file 'embedded_file_obj0001.bin' is likely the dropped payload.

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 XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
  • ClamAV: Pdf.Exploit.Dropped-90 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-90
  • 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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.4/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
be11ece6fcadd570c12a5261352aee0089b2dab019bb99c6069aac7e10769418		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x5D 13473 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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