PDF malware analysis — malicious · 377e492e43da1c64

MALICIOUS

PDF

96.2 KB

MD5: f2a67611c75b6c3dd893223a6e06db34 SHA-1: ac78d02975c77d9399162a17f4a61a17d09570f5 SHA-256: 377e492e43da1c6402b7eadee9b97f85d2413b723f0c76daf0c0a8eb77040d9c

172 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF file exploits CVE-2010-0188 via XFA form elements containing JavaScript. The embedded JavaScript stager, xfa_numeric_stage_000.js, is responsible for decoding and executing the exploit. The ClamAV detection 'Pdf.Exploit.Dropped-78' further confirms its malicious nature. The primary goal appears to be downloading and executing a secondary payload, as indicated by the stager's behavior and the 'Dropped' classification.

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: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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` `ea0a2daab7754d6ac093289e7786e0c918753cb511ddd3021d414cf30d82a6c4`	deobfuscated-js	XFA character-table decoded JavaScript (raw) at offset 0x2EB	3746 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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