Malicious PDF — malware analysis report

Static analysis result for SHA-256 7afd33094efc4d56…

MALICIOUS

PDF

99.5 KB
MD5: 30ef9cb528e6b95501dbd1b7e3f6f9e4 SHA-1: 2f84764cfc97a8df8d2552b9fecac8661defbac9 SHA-256: 7afd33094efc4d563e44cd9d0b9f442c1a478945d796e60363b720604eba3fee
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

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 in Adobe Reader to achieve code execution. The presence of embedded script content further suggests the intent to download and execute a secondary payload, although the specific script content is heavily obfuscated and truncated.

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
be6d46f04a42397d2fbf2e42cb4e840846134db793bc0a5ffc8ec15cbcb75d6d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101141 bytes

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