PDF malware analysis — malicious · 4c71d9a1ebc988ff

MALICIOUS

PDF

101.7 KB

MD5: 3ccf8d8b2cb1e64710c9d9f1a2e943df SHA-1: 92744f99be7959e97e33670a719b8e9e44ba52b4 SHA-256: 4c71d9a1ebc988ff1e4f884b5bf7735c1ed987bd58cc3ecf611a228c17d3d4cd

188 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a PDF file that leverages the CVE-2010-0188 vulnerability, which targets XFA forms and LibTIFF processing in Adobe Reader. The heuristic firings indicate an embedded script payload within an XFA form, strongly suggesting the exploitation of this known vulnerability to execute arbitrary code. The embedded URL is likely part of the exploit chain, though its reputation is unknown.

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` `8da1ec4159a4718ae5884933c9d59893c36d8b2a25e115e87b035a832e8e4b6b`	pdf-embedded-script	PDF raw stream script payload at offset 0x346	103421 bytes

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