Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ed46a16e934e4a…

MALICIOUS

PDF

99.9 KB
MD5: 5fe2f7d51ee4944c892e512507e671db SHA-1: 558621acb963e0317336224fe7018d4efe8bc341 SHA-256: 12ed46a16e934e4aa41b1dcb5f004882b9071dad55fd2379f101a9286d0ba06e
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 by an ML classifier and contains a critical heuristic for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. This indicates the file is designed to exploit a known vulnerability to gain execution. The presence of embedded files and scripts suggests it's likely a dropper or downloader for a secondary payload, though the specific nature of that payload cannot be determined from the provided evidence. The benign URLs found are likely unrelated to the malicious functionality.

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
7ec89861b2f08fd9605a0c7878f549e865fb5ed6832013b808666a73296e033f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101518 bytes

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