PDF malware analysis — malicious · 4bf949a9ff4b9c30

MALICIOUS

PDF

1.95 MB

MD5: a1d91d1bcc9d17b05ff6191a7218e609 SHA-1: fa84878af4b451229db85a3d7349e99b7ce5eefd SHA-256: 4bf949a9ff4b9c30ef366ef6ba9fe9010667f3becdf4f46dd73093a69e55da8c

188 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1559.001 Component Object Model Hijacking

The sample is a PDF file that utilizes an XFA form, which is known to be a vector for exploits. Static analysis detected a critical heuristic match for CVE-2010-0188, indicating the exploitation of a vulnerability in Adobe Reader's LibTIFF component. The presence of an embedded script payload within the XFA form further supports the malicious intent, likely to download and execute a second-stage payload. The ClamAV detection also 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` `f368799f047235ea3c2fc0637827b733e50d959b7c957d52c781352d46e13b70`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	16750 bytes

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