Malicious PDF — malware analysis report

Static analysis result for SHA-256 12f43377b5bf49cc…

MALICIOUS

PDF

99.9 KB
MD5: 4c7e69c5d375b1229c448dffb238d637 SHA-1: 32765f7af81dd838799a882830b48c5a6bef1886 SHA-256: 12f43377b5bf49cc5d5058dd0657d21c2746eaaf2414525ce3a399ba2c1cdb57
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, exploiting CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The exploit appears to target embedded script payloads within the PDF. While no specific URLs or scripts were directly readable, the exploit's nature suggests it is designed to download and execute a secondary stage, characteristic of many malware delivery mechanisms.

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
28189783c041cba7020d2b4f1febc0d62cdd677895ee9930d799a24ab09271be		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101554 bytes

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