Malicious PDF — malware analysis report

Static analysis result for SHA-256 772acf17e809deef…

MALICIOUS

PDF

16.0 KB
MD5: 1885e1bd7421cbe090a863cffd0c3e3e SHA-1: 8e7c6fcd2ab64712174b495400c31a953c7eaaa6 SHA-256: 772acf17e809deeff6a2091d4afc000cdf25a1cfd6088d16d2739b42e23a2de6
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1566.001 Phishing: Spearphishing Attachment

The sample is a PDF file that leverages an XFA form to exploit CVE-2010-0188 in Adobe Reader. The embedded script payload within the XFA form is the primary mechanism for delivering the malicious content. The embedded URL, while seemingly benign, is present within the document's structure and could potentially be used in conjunction with the exploit.

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.
  • 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.
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000034e.bin
c888890d25bf425bc0c5f16047d28a61319c26bac849f1e0aaee811a02163385		 pdf-embedded-script PDF raw stream script payload at offset 0x34E 15701 bytes

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