PDF malware analysis — malicious · 4e70643fc53108d1

MALICIOUS

PDF

101.7 KB

MD5: d5a9799e85691d6ff1f444c7717101e2 SHA-1: acefd3ad182cdec2489db4c2abcd647e8216236a SHA-256: 4e70643fc53108d1b12c07fc5ad21f9f8c0e31c0ea5a5e015c631b497eab2af3

188 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a PDF document that leverages the CVE-2010-0188 vulnerability in Adobe Reader's handling of XFA forms and LibTIFF images. This exploit allows for the execution of arbitrary code, indicated by the critical heuristic firings. The embedded script payload further supports the malicious intent, likely to download and execute a second-stage payload.

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` `11352c55a492006c5a6f0c759a246187c3d7bce2bb8af5bd39835040da4bd811`	pdf-embedded-script	PDF raw stream script payload at offset 0x346	103423 bytes

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