PDF malware analysis — malicious · 0f5b8d36002f53f7

MALICIOUS

PDF

28.6 KB

MD5: 0625037c8d3212b1576f2ee6f8b3de6d SHA-1: 54ab99a2aa83b22d7a19ec04c843d2cbe96329c6 SHA-256: 0f5b8d36002f53f7c138a1295a2d74df1d76bd961ecead25566ca7a20a80f4b4

200 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is a PDF that contains an XFA form, which is known to be vulnerable to exploits like CVE-2010-0188. The presence of the XFA numeric stager and the ML classifier's high confidence score indicate that this PDF is designed to exploit this vulnerability for client execution. The embedded URL, while seemingly benign, is part of the exploit structure.

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.
ClamAV: Pdf.Exploit.Agent-36825 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36825
XFA numeric character-table eval stager high PDF_XFA_NUMERIC_EVAL_STAGER

PDF XFA initialize script reads numeric form data from rawValue, maps the values through a short character table, and evals the reconstructed stage. This is an exploit-kit staging technique even when the final decoded layer remains encoded.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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://www.xfa.org/schema/xfa-template/2.5/

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