Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba3275278d8fc6f…

MALICIOUS

PDF

81.8 KB
MD5: f025b394fbac8ee934a043162b91d798 SHA-1: 071a4ac6d32ffd958b1c5f921004ac597feb3e69 SHA-256: aba3275278d8fc6fc77675d0fbec990d8412e1e068664e648d69450d2fc15112
158 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image processing. This exploit is designed to execute a malicious payload, as indicated by the 'Pdf.Exploit.Dropped-93' ClamAV detection and the presence of an embedded script payload. The attack pattern is consistent with a targeted phishing attempt leveraging a known PDF vulnerability to deliver malware.

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.
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000391.bin
ebf72997f8690586aa1c8c61af8541deeb52d703626f0eaa353f1d4aa2fef99a		 pdf-embedded-script PDF decompressed stream script payload at offset 0x391 70498 bytes

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