Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa57a2d02291a44…

MALICIOUS

PDF

86.0 KB
MD5: a3255c7e3729f3a36ac3bce8a9f613c5 SHA-1: b06233c62d9b0efc8db035b65dc2dccdcb818d63 SHA-256: 6fa57a2d02291a44dd360c49b41ccdf1df91a5310856c47c669582a14467e0dd
176 Risk Score

Malware Insights

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

The sample is a PDF file that leverages the CVE-2010-0188 vulnerability in Adobe Reader's XFA form processing. This exploit is designed to download and execute a secondary payload, as indicated by the 'Pdf.Exploit.Dropped-78' ClamAV detection and the ML classifier's high confidence. The embedded file and script payload markers further support this conclusion.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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 script payload in PDF stream low 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 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
3ac9f903c1a26e71f51fe05643cb097fc57b960f5b6fe528a2566a73d2d291e9		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 87305 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.