Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b2c66e3432ce35…

MALICIOUS

PDF

50.7 KB
MD5: 41bc0ef9dd8ed901048390b426ad257a SHA-1: 0b90882be0977d487e137971da9c4a770dc54076 SHA-256: 80b2c66e3432ce350b0ff50ca2488b24cfb67907377860839089329c0b9e1907
176 Risk Score

Malware Insights

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

This PDF file is identified as malicious due to the critical heuristic firing for CVE-2010-0188, indicating an exploit for Adobe Reader's LibTIFF component. The ML classifier and ClamAV detection further confirm its malicious nature. The embedded file and script payload suggest it's designed to download and execute a secondary stage, likely leveraging the identified exploit for initial execution.

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.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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
ec8f085e83a20c34bc1ff323352c055ac5628e318b92f5fd10a2d6839bce6ea5		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 51183 bytes

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