PDF malware analysis — malicious · 13f2943e209d9313

MALICIOUS

PDF

12.7 KB

MD5: c95a4cf22c08a346767bd948b5fc5c82 SHA-1: 208091a4eaacd21e412d1c5bae99cae2a15861a0 SHA-256: 13f2943e209d9313b991608d05baf4a999906b4592f847f824ceb186a8a9e00b

228 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file that contains an embedded XFA form, which is known to be vulnerable to CVE-2010-0188. The embedded script, which appears to be JavaScript, is likely responsible for triggering this exploit. The script's obfuscated nature and the presence of exploit-related heuristics suggest it aims to download and execute a second-stage payload.

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
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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://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_00000374.bin` `df9e449de2d0dd4ff763e534e6ab2ceef4d334e96d55e1115b324cd2ab40b2a1`	pdf-embedded-script	PDF raw stream script payload at offset 0x374	12240 bytes
Detection ClamAV: Pdf.Exploit.Agent-36756 Obfuscation or payload: unlikely

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