Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba66870f6cd318e…

MALICIOUS

PDF

99.4 KB
MD5: e13c08b43c1ecfa44956634e0976ba93 SHA-1: bb3967364aca313f391fdc6dec0406b9fcde0395 SHA-256: 6ba66870f6cd318e459357de965454f983567f2be400bb7d5677c6073222258e
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious, exploiting CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This exploit is designed to achieve arbitrary code execution. The presence of an embedded file and script payload suggests the PDF is intended to download and execute a secondary stage, characteristic of a downloader or dropper malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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
13ee195018a558440267b40957b97d363c3602ac3a0018aaca0b86ef3a66a590		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101005 bytes

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