PDF malware analysis — malicious · 61518b658daee4db

MALICIOUS

PDF

99.9 KB

MD5: c9734e56264201833d763f827c64a139 SHA-1: 518d81f9b21e28a971c1d4a56f2597521ba4b631 SHA-256: 61518b658daee4db203eb63c0efb8e3c4230ef899a56626adcd97350ef9ee4e0

116 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file identified as malicious, with critical heuristics indicating exploitation of CVE-2010-0188 via XFA forms. The embedded script payload and ML classifier further support malicious intent. The exploit likely serves to download and execute a secondary payload, though the specific script content is too obfuscated to determine its exact function.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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.
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://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `c19668e679e5dff5c9e2b56d4535e151f392d70bfc9e823127d5dbd8b25d1136`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	101537 bytes

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