Malicious PDF — malware analysis report

Static analysis result for SHA-256 3306303b4e43ff3f…

MALICIOUS

PDF

122.0 KB
MD5: 58ba4d223836d327a632b97a842f5318 SHA-1: de8a42d7df5188a9d623b71c219beb0b556da292 SHA-256: 3306303b4e43ff3f6a24beab3481a3b76b5011be7d0b34d778f228e49a6ffbce
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The embedded script payload within the XFA form indicates an attempt to execute malicious code. This is further supported by ClamAV detection as 'Pdf.Exploit.Dropped-78'. The primary attack vector is likely a user opening a malicious PDF, leading to the execution of an exploit that downloads and runs a secondary payload.

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.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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
6babc682ad8dac86074e44753b31991a030cca8f08bd8c42b9e43377bfb7307e		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 124195 bytes

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