Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0f1b142c8217b5…

MALICIOUS

PDF

12.5 KB
MD5: bebcce1f48c9843f0e6c4bc7bbd3c2a6 SHA-1: 768f9b0c35d0b411aed47a7c6c9080b448a4ac13 SHA-256: 3a0f1b142c8217b5d5583c10f820b335667db1b96147e6a71eb4c6c26d056e29
214 Risk Score

Malware Insights

The PDF file contains an embedded XFA form that triggers a known exploit for Adobe Reader (CVE-2010-0188). This exploit is designed to download and execute a second-stage payload. The presence of JavaScript actions and embedded script payloads within the XFA form strongly indicates malicious intent, likely for delivering malware. The ClamAV detection further confirms its malicious nature.

Heuristics 9

  • 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.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_000003ce.bin
b6d8b76f0e075d3e6ffb71d5da2e216117a214c23ab50835ab98603747c8115d
pdf-embedded-script PDF raw stream script payload at offset 0x3CE 11743 bytes