PDF malware analysis — malicious · 9105edf5374a3dc4

MALICIOUS

PDF

24.2 KB

MD5: 4a90cb4dfe0e70443ca70323da8b3cff SHA-1: a3268af49e4180c70944188bd4b68d73f689f098 SHA-256: 9105edf5374a3dc4af3f13aa9c8bf564d5cc844e068daba99f1ac83f826582d6

268 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell T1059.003 Windows Command and Shell

The PDF file contains XFA (XML Forms Architecture) content which is known to be a vector for exploits. Specifically, the 'CVE_2010_0188' heuristic indicates exploitation of a LibTIFF vulnerability within Adobe Reader. The 'PDF_XFA_NUMERIC_JS_STAGER' heuristic confirms that a JavaScript stager was recovered from the XFA form data. This stager, identified as 'xfa_numeric_stage_000.js', is likely responsible for downloading and executing a second-stage payload, as indicated by the ClamAV detection 'Js.Exploit.HTML-30'. The embedded URL, while benign-looking, is part of the XFA template structure and not directly used for payload delivery in this instance.

Heuristics 7

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
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
XFA numeric JavaScript stager high PDF_XFA_NUMERIC_JS_STAGER

PDF XFA script reconstructs a hidden JavaScript stage from numeric field data or a character table, then evals the result. The decoder is gated on XFA script, numeric staging, and recovered exploit-like JavaScript or shellcode markers.
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xfa_numeric_stage_000.js` `c96d441a9b388e6029537dfff85074dfc6a06ada4917ccf663f8ed75d1fce201`	deobfuscated-js	XFA rawValue numeric decoded JavaScript (raw) at offset 0x3A8	3747 bytes
Detection ClamAV: Pdf.Exploit.Agent-36962 Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.