Malicious PDF — malware analysis report

Static analysis result for SHA-256 d35962f01c58d12d…

MALICIOUS

PDF

49.9 KB
MD5: ed27e8c22dd29b9a17626ba195a839a0 SHA-1: f2bf082078e6f446eb4a173b19d7a89d408b7af3 SHA-256: d35962f01c58d12d38216227d9db1f81a2167f1507d162c27ceac03e4831beb0
198 Risk Score

Malware Insights

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

The sample is a PDF document that leverages the CVE-2010-0188 vulnerability, which targets Adobe Reader's handling of XFA forms. This exploit is designed to download and execute a secondary payload. The presence of embedded script markers and the ClamAV detection further confirm its malicious nature. The embedded URLs are related to XFA schema but do not appear to be directly malicious.

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-93 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-93
  • 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
8ef678114df3960b10125804231b8797b15399d564479b5b6558e95a42787e66		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 50336 bytes

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