PDF malware analysis — malicious · 55926b54d79bc1dd

MALICIOUS

PDF

97.1 KB

MD5: df52715e50c39d8904188ef24efb5ee8 SHA-1: e7cd7f998987c881a355cf250bac7bd2c48a61c6 SHA-256: 55926b54d79bc1dd09b3bd9a1c27528acf8d02ecec36cd2d9858ec6f38d60125

172 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter T1059.001 PowerShell T1059.003 Windows Command Shell

The PDF file contains a critical XFA exploit targeting CVE-2010-0188 in Adobe Reader. A deobfuscated JavaScript stager was recovered, indicating the likely intent to download and execute a second-stage payload. The embedded URL, while benign in reputation, is part of the exploit's structure. The ClamAV detection further supports the malicious 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` `4e0f84eb4c16c6482d9b4ace985c1bc562773382fdb859dda5e69d9065a584c1`	deobfuscated-js	XFA character-table decoded JavaScript (raw) at offset 0x2EB	3786 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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