PDF malware analysis — malicious · cc1252fac92a949a

MALICIOUS

PDF

24.1 KB

MD5: 5271594afd6f2402f80b511b95aecf1a SHA-1: 128bc4c5adfdebb665855907f3eaba69f0b646d3 SHA-256: cc1252fac92a949adb0652055bf95c38ccd5b90268a6747ad03ec525e5d12b6b

268 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link or Document

The PDF file contains XFA (XML Forms Architecture) data, which is known to be a vector for exploits. Specifically, the CVE-2010-0188 heuristic indicates exploitation of a vulnerability in Adobe Reader related to XFA forms. The presence of a deobfuscated JavaScript stager (xfa_numeric_stage_000.js) further confirms the malicious intent, likely to download and execute a second-stage payload. ClamAV detections (Js.Exploit.HTML-30 and Pdf.Exploit.Agent-36962) corroborate the malicious nature of the file and its extracted components.

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` `b777b797bd53cfdd99d7d66529e2d83fb3dce161f37bf9707fc38be0003e3405`	deobfuscated-js	XFA rawValue numeric decoded JavaScript (raw) at offset 0x3A8	3739 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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