Malicious PDF — malware analysis report

Static analysis result for SHA-256 134ba3f68a573551…

MALICIOUS

PDF

50.8 KB
MD5: ad76aa85acdd321396abb12ecc1b114a SHA-1: a8fe916bf81dba336b892257a4c9785c6fbb0a65 SHA-256: 134ba3f68a5735514167885e3a3d0ec306465cbbc033958ad06ab1e0e421eb91
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, which exploits a vulnerability in Adobe Reader's handling of XFA forms. The ML classifier also strongly flags this file. The embedded file and script payload indicators suggest the PDF is designed to deliver and execute a secondary exploit or malware. The ClamAV detection name further confirms its malicious nature.

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.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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
cb140ef26e68f8c169beae6310eced7e4afadfb2d940f57e437a3b34b2add191		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 51289 bytes

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