PDF malware analysis — malicious · 2c4f0be848bdb5e5

MALICIOUS

PDF

14.1 KB

MD5: 1f6548fee97b9bc7cff3405956feeb17 SHA-1: 0ad7e20b2589cbaa2e3ee615a7cb23ab9dba5605 SHA-256: 2c4f0be848bdb5e5158c7d9a87e872819eb788931d240c4ad4d74f4393c3f167

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF file that leverages XFA forms and a LibTIFF vulnerability (CVE-2010-0188) to achieve code execution. The presence of ClamAV's Js.Exploit.HTML-30 detection suggests that JavaScript is likely involved in the exploitation process, potentially downloading and executing a second-stage payload. The embedded URL, while seemingly benign, is part of the XFA template structure and could be a vector for further malicious activity.

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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Js.Exploit.HTML-30
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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