PDF malware analysis — malicious · 03722b304929d18b

MALICIOUS

PDF

14.3 KB

MD5: 98090a48d2fd3e6e55a653efef770c2a SHA-1: a5b6c06b5ab829478403e9bc16182fe8034ec619 SHA-256: 03722b304929d18b5b14ac46d0025444e6c9b5e8547841fa7ccb2f032e28c1df

200 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file contains an XFA form that leverages the CVE-2010-0188 vulnerability in Adobe Reader. The exploit appears to be a stager designed to download and execute a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent, and the embedded URL, while likely benign on its own, 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.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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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