Malicious PDF — malware analysis report

Static analysis result for SHA-256 de63c8f41a10f0b7…

MALICIOUS

PDF

99.9 KB
MD5: c68282b1a6a3c17c6be8451fae2234cd SHA-1: 301e20d2eea294fc67996c39e8bbcf92e058e18e SHA-256: de63c8f41a10f0b763a54df29188b7edcf022c88d4999ec9da5bb582813ebd84
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious JavaScript T1204.002 Malicious Link: Malicious File

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. This exploit is designed to download and execute arbitrary code. The presence of embedded scripts and an embedded file further supports the malicious intent of this document. The embedded URLs, while not directly malicious, are related to XFA schemas.

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
4d265c76e4f402b2c3f57f493a66c51fbe92c661fc9c8aa9549a2015a6844b8f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101561 bytes

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