Malicious PDF — malware analysis report

Static analysis result for SHA-256 d73d127cff4811ab…

MALICIOUS

PDF

82.1 KB
MD5: 12680423ad713c38232887c078edfc8c SHA-1: 821d7fb387b7a0ccbffae5ae487038e8c7b43032 SHA-256: d73d127cff4811ab30f068c7c01819b997a1fb07f777b1afb10e292ed16752e4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.002 Spearphishing Attachment

The sample is a PDF document that leverages the CVE-2010-0188 vulnerability in Adobe Reader's XFA form processing. This exploit allows for the execution of arbitrary code, likely to download and run a secondary payload. The embedded file and XFA structure are indicative of exploit delivery.

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/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
9192595a285002ebadf9e5a73bd105a6c0378f2b30c6f602e4949073d41b265a		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 83506 bytes

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