Malicious PDF — malware analysis report

Static analysis result for SHA-256 35a340e20d5e03f8…

MALICIOUS

PDF

100.0 KB
MD5: c4727c6a9f859ca568e7eea3b417d915 SHA-1: 59135255262b16bcb63729d5235f1f93097127b3 SHA-256: 35a340e20d5e03f8320a4c507be9857564a775f686955af59a7c71f932e56f91
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. The XFA form contains executable script which is likely responsible for triggering the exploit. The embedded file and script payload indicate the intent to execute arbitrary code, likely for further malicious activity.

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
5be0d082454018ed78680264e325b0f3df834406da7701bba5163f85ad053d66		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101629 bytes

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