Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e47f6508856a1e…

MALICIOUS

PDF

99.6 KB
MD5: d7597f17f841ab21e30825d23a7a411e SHA-1: e4fa109d602b8fb37bd95ba5c58647079386af72 SHA-256: 84e47f6508856a1ef2ca69419a24309e4effc234f9e6d0df94637d165008ff63
116 Risk Score

Malware Insights

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

The PDF sample contains an embedded XFA form and triggers the CVE-2010-0188 exploit, indicating it's designed to execute arbitrary code upon opening in a vulnerable Adobe Reader version. The ML classifier strongly flags this PDF as malicious. While no specific URLs or scripts were extracted, the exploit itself is the primary indicator of malicious intent, likely to facilitate the download of a secondary payload.

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
312059f8a175f3453a1470b435e5441fcbe22aea20637c554c24f2de0f617c49		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101241 bytes

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