PDF malware analysis — malicious · 39d1cf3adbe04e21

MALICIOUS

PDF

99.8 KB

MD5: 4e17309d718b61dbccdaf849edfc3a48 SHA-1: afdcf1cc374ca0586b5ee973a4b981dc854cc8dd SHA-256: 39d1cf3adbe04e2114874aa6a3d5c9f791c692d69e2cfcc6039240447a4501b2

136 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The sample is a PDF document that exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. This vulnerability allows for arbitrary code execution when a vulnerable version of Adobe Reader opens the malicious PDF. The PDF contains an XFA form with an embedded script payload, which is the mechanism used to trigger the exploit. No specific malware family could be identified, but the exploit's nature suggests a downloader or dropper.

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.
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0008.bin` `5558f025c550c563a2aa9bcb1c7ae86beee2b4463902a38ce6200041d6182970`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xC6	101478 bytes

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