Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c4371b1537f3f4c…

MALICIOUS

PDF

79.1 KB
MD5: 48f72b5b5578d9a042fc1a9ae590634a SHA-1: cab1654951270d8aab6877b5b49c8f2b19089ccc SHA-256: 0c4371b1537f3f4c3c70d814ae39625881a5f9a32778722bf4ad166f6eb83c16
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by multiple heuristics, including a critical finding for CVE-2010-0188, an exploit targeting Adobe Reader's LibTIFF component. The presence of an embedded script payload and the ClamAV detection signature 'Pdf.Dropper.Agent-6308199-0' strongly suggest this file is a dropper designed to download and execute further malicious content. The benign URLs found are likely unrelated to the malicious functionality.

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.Dropper.Agent-6308199-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-6308199-0
  • 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
1887ad11b8711675de30911baa8417d9a7e5e53e0dd71cba369c1cedf338543d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80296 bytes

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