PDF malware analysis — malicious · 0c13bedb481508e6

MALICIOUS

PDF

12.8 KB

MD5: e0fbc50e4a3b954b75c54f14b2e6f718 SHA-1: a27f13d9636f2982345add931e448139113cf62b SHA-256: 0c13bedb481508e66fb8c349539dfb92fc6c98e3a125f01d2617c5ec66b54956

170 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file identified as malicious by ClamAV and an ML classifier, specifically triggering heuristics for the CVE-2010-0188 exploit targeting Adobe Reader's LibTIFF component. An embedded JavaScript payload was extracted, which likely attempts to download and execute a second-stage payload. The reconstructed JavaScript string is too long and obfuscated to determine its exact function, but the exploit and embedded script indicate a clear intent to compromise the user's system.

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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_0000034c.bin` `5c309d5206cf5285cc6928119db7cb685dbb79a37d1466afa2f0f8a0d8bb8a9b`	pdf-embedded-script	PDF raw stream script payload at offset 0x34C	12313 bytes

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