PDF malware analysis — malicious · 9a42b2f20f4c0007

MALICIOUS

PDF

21.4 KB

MD5: ffe6de25724ae0cdae3af74e3af9ede3 SHA-1: 30e09a7b5b0e325389435507ea7cd69b231a327b SHA-256: 9a42b2f20f4c00075355a9f2c04f61c84159890104591fde7a2ad1c0f56ed829

168 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1566.002 Phishing: Spearphishing Attachment T1190 Exploit Public-Facing Application

The sample is a PDF document that leverages XFA (XML Forms Architecture) to deliver a payload. Heuristics indicate exploitation of CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF processing within XFA forms. This exploit likely downloads and executes a second-stage payload. The embedded URL is likely related to the exploit infrastructure.

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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