PDF malware analysis — malicious · 09de5c652bb5fad0

MALICIOUS

PDF

31.9 KB

MD5: 09fda093ca8b666eb991bb944528cffa SHA-1: 691146f3d2369951ac65ef4773563f37730ada88 SHA-256: 09de5c652bb5fad06fbb1bf7b6be9622c83e417ee8f5194542827463283f5f18

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file contains XFA (XML Forms Architecture) which is known to be a vector for embedding executable scripts. Heuristics indicate the presence of risky executable script and a numeric evaluation stager, strongly suggesting the execution of malicious JavaScript. The ClamAV detection 'Js.Exploit.HTML-30' further confirms the malicious nature, likely involving exploitation of a client-side vulnerability.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
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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