PDF malware analysis — malicious · fcf352318a4f612e

MALICIOUS

PDF

21.4 KB

MD5: 0b6b3e0dd5ead8d6592ee4d8c9722980 SHA-1: eb7007372309aa99b37bb05b2306e5ff6958fde5 SHA-256: fcf352318a4f612ece49bd487fac845e7800e512a57095cf4f6d40bc01e26258

168 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.002 Spearphishing Attachment T1190 Exploit Public-Facing Application

The sample is a PDF file identified as malicious by ClamAV (Pdf.Exploit.Dropped-78). Static analysis detected critical heuristics related to CVE-2010-0188, an exploit targeting Adobe Reader's XFA forms. The presence of an XFA numeric stager further indicates an attempt to evaluate and execute code. The embedded URL, while seemingly benign, is part of the exploit chain.

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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