PDF malware analysis — malicious · bd286aacb1347dfb

MALICIOUS

PDF

38.8 KB

MD5: 2a9b963712f25ea0f7b7b6774d4b8664 SHA-1: 783f592b0507a8dbd1f133f11d079b9758835fe5 SHA-256: bd286aacb1347dfb9d860dd77ca5f1d7f5f81022d6e29346ead56c40dcbef32e

172 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

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 an exploit targeting a vulnerability in Adobe Reader's LibTIFF component via XFA numeric JavaScript. The ClamAV detection 'Js.Exploit.HTML-30' further confirms the malicious nature, likely related to the embedded JavaScript stager. This stager is designed to download and execute a second-stage payload.

Heuristics 6

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 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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Suspicious extracted artifact info 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.
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` `1ec0960e46e03fb95277d055ba479c8d24281a98e512bd43092111f9ac9af48c`	deobfuscated-js	XFA rawValue numeric decoded JavaScript (raw) at offset 0x33D	3755 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

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