PDF malware analysis — malicious · 481f1a375025a4f5

MALICIOUS

PDF

101.7 KB

MD5: 040160e8fb18c7790c1adaa7b4f34cf6 SHA-1: c124fc6e00bdf666e2ea908f0dfdb49fd5b8659a SHA-256: 481f1a375025a4f5fdff6e3254ea503ec81a29dfd2d1ebb49ecc273a0c491ac3

188 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter

The sample is a PDF file that leverages XFA forms to deliver a malicious payload. Heuristics indicate exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF processing within XFA forms. An embedded script payload was also detected, suggesting the file is designed to download and execute further malicious content. The embedded URL, while seemingly benign, is present within the document's structure.

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.
XFA form contains executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
Embedded script payload in PDF stream medium 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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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_00000346.bin` `19718687b4acd5c2458502eb456181d3cb0d718d8a1b3ec3c269a5e05961793d`	pdf-embedded-script	PDF raw stream script payload at offset 0x346	103438 bytes

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