PDF malware analysis — malicious · 4b4b789b8fbb6a84

MALICIOUS

PDF

16.2 KB

MD5: 3f177c1742a74deff70664280a090cb7 SHA-1: 3c5e001e2a8fb3d33b145f4c420b83b9c76531c5 SHA-256: 4b4b789b8fbb6a84e1e3a867cf375e12bdc7b52c1a0745f079cfc709ce3fd3ed

188 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment

This PDF file contains an embedded XFA form that leverages the CVE-2010-0188 exploit targeting Adobe Reader. The embedded script within the XFA form is indicative of malicious intent, likely to download and execute a secondary payload. The ClamAV detection further confirms its malicious nature.

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_00000359.bin` `5dcc2d8df0025f90004318d9d9af4d3038e083b81b2585f8cf291b9288f9b9bb`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	15885 bytes

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