PDF malware analysis — malicious · b904c8546e8a040b

MALICIOUS

PDF

17.9 KB

MD5: 54ccaf9e2f44c21e0d751d46cd054790 SHA-1: 794e8eec18d0fdaf23e351ca40df6a29c137afed SHA-256: b904c8546e8a040bcfe7ae900ab3288dcd0812b783567f94d6a46f580be0e78f

268 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell T1059.007 JavaScript

This PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The heuristic 'PDF_XFA_NUMERIC_JS_STAGER' indicates that a JavaScript stager was recovered from the XFA form data. This stager is likely responsible for downloading and executing a second-stage payload, as suggested by the ClamAV detection 'Js.Exploit.HTML-30' and the suspicious extracted artifact 'xfa_numeric_stage_000.js'. The embedded URL is likely related to the XFA schema but could also be a lure.

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` `7a339c18081ec465b9666c17824dd29afaa782fc1f6eeb9a6a9717e96835e9a9`	deobfuscated-js	XFA replacement character-table decoded JavaScript (raw) at offset 0x2F0	3751 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.