Malicious PDF — malware analysis report

Static analysis result for SHA-256 42609e77066545b5…

MALICIOUS

PDF

99.6 KB
MD5: ebf10f7669b3d05e72e2627650a9f617 SHA-1: 09dd6f1dc432f2487e3a404b6af8c198e8558d4e SHA-256: 42609e77066545b5dd8ca1e29931896f626e2dca49215ad5495cf19bffe4f5ce
198 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious PDF T1059.001 Command and Scripting Interpreter: PowerShell

This PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF XFA image processing. The critical heuristic firing indicates the exploit payload was successfully decoded from the XFA stream. The embedded script payload further suggests malicious intent, likely to download and execute a second-stage payload. The ClamAV detection confirms its malicious nature.

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.Malware.Agent-9813696-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Malware.Agent-9813696-0
  • 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
b1bbce075521aa6d3ca9c1bdbb829c7f20b9448dca9378a5fcd288a805ddd6fb		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101279 bytes

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