PDF malware analysis — malicious · 176b556d93692336

MALICIOUS

PDF

12.6 KB

MD5: 4401874945de62a4d66491cb5d2b00e3 SHA-1: d8bee2c293897b979bb33ea750b6e0e5049b9169 SHA-256: 176b556d93692336658785b8641a6fa7ade05f86e3002ae211cf1b89f97faba3

170 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is a PDF that contains an embedded script payload. Heuristics indicate it exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The embedded JavaScript, though obfuscated, likely contains logic to download and execute a second-stage payload, as suggested by the 'embedded_pdf_script_00000359.bin' artifact and the ML classifier's high confidence score. The benign URL listed is likely a red herring or part of the XFA template structure.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.Agent-6136306-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
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
`embedded_pdf_script_00000359.bin` `36ba3001a973f6057c1b0e90141bf691eeb2f24be9e4d97d1d80ddd5538b08c5`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	12168 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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