PDF malware analysis — malicious · 8d3ce5f4bd1ba8ac

MALICIOUS

PDF

96.4 KB

MD5: 6b8be95141cddab45607f63272f975d9 SHA-1: fdcec826bcba5927c9c346f9e16c50e29dcb8694 SHA-256: 8d3ce5f4bd1ba8ac2c5b16d4abcced86b1e965bd30beaed24bac29b02d7b32f0

268 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1059.001 PowerShell

This PDF file contains XFA (XML Forms Architecture) content, which is known to be a vector for exploits. The critical heuristic firing for CVE-2010-0188 indicates a specific Adobe Reader vulnerability related to XFA forms. A JavaScript stager was recovered, suggesting it attempts to download and execute a second-stage payload. The embedded URL, while benign in reputation, is part of the XFA schema and not directly indicative of malicious infrastructure. The ClamAV detections further confirm the malicious nature of the file.

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: Pdf.Exploit.Agent-36829 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36829
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` `a3fa4cc1da5c6b6473fc01984c8d65187e0f1a0f0381c94c324fd6e258aaa5b7`	deobfuscated-js	XFA character-table decoded JavaScript (raw) at offset 0x2EB	3754 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).

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