PDF malware analysis — malicious · a4ec97a3729e3ddf

MALICIOUS

PDF

102.1 KB

MD5: e024c5defde4256ca2ce75ef78529ac7 SHA-1: f95b4073fcd7f2ea82f3531b905552b528fa75df SHA-256: a4ec97a3729e3ddfa124d0fb4298704df726cf93e23368820a35cfd112ecd2d3

190 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1566.001 Phishing: Spearphishing Attachment

The PDF file contains an XFA form which is known to be vulnerable to exploit code. Specifically, the 'CVE_2010_0188' heuristic firing indicates exploitation of Adobe Reader's LibTIFF component. The embedded script payload, detected by 'PDF_EMBEDDED_SCRIPT_PAYLOAD' and 'PDF_XFA_SCRIPT', likely contains the exploit code. ClamAV also identified this as 'Pdf.Exploit.Agent-6136306-0'. The primary attack vector is likely phishing, where a user is tricked into opening the malicious PDF.

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` `526880ccce3d4405cd1cc8747abef65fee8651bce9e3783be1ede99a39871c54`	pdf-embedded-script	PDF raw stream script payload at offset 0x346	103850 bytes

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