Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf43941512c514f…

MALICIOUS

PDF

50.8 KB
MD5: 0e4de7055d2d602a61669dae2a138576 SHA-1: 0328eef03fdf26466bf3de3a4f36728c58f600fe SHA-256: aaf43941512c514ffa56777b9e1ca19ce86a055dd1c8ff3f63ca45afa42d3166
196 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains embedded XFA forms and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader. The ClamAV detection 'Pdf.Exploit.Agent-6136306-0' further confirms its malicious nature. The embedded script payload indicates the execution of a secondary stage, likely to download and run further malicious content.

Heuristics 7

  • 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.
  • 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
b7fd53c3e53453f3ab7084c3f9c6b13bd4dd05cf0b659d1fe8973b228d2d12ef		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 51217 bytes

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