Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2f1c951164c7f3…

MALICIOUS

PDF

100.0 KB
MD5: 5c0175b294bc81d76b7fa8c629430e5e SHA-1: 52177f663872c89c5cab0d8eeea9fa0ee74c5fba SHA-256: db2f1c951164c7f3ce1c841020b2b8cd175598f90cc00c6ac7c910b0d636cc2b
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.007 Command and Scripting Interpreter: JavaScript

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, leveraging an XFA form and embedded script to achieve code execution. The embedded script is heavily obfuscated, making its precise actions difficult to determine, but it is designed to download and execute a second-stage payload. The presence of an embedded file further suggests a multi-stage attack.

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.

FilenameKindSourceSize
embedded_file_obj0008.bin
6db04b1b4a343ed1c9e847fa2b886d22a21deacc590159d64e92d174224f55cd		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101696 bytes

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