Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8296bbe50c3d5ba…

MALICIOUS

PDF

40.7 KB Authoring application: Python PDF Library 055 http072057057pybrary056net057pyPdf057
MD5: 1d36baf5120ae89c4121ad341810c358 SHA-1: ef5ca072b31481f84105f7c09cab77430e9b8c75 SHA-256: d8296bbe50c3d5ba1a5263b23c1b449c71461e79790e701923fd9fde8a539c27
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The critical heuristic firing for CVE-2010-0188 indicates that this PDF exploits a known vulnerability in Adobe Reader related to XFA forms. The embedded JavaScript and embedded file further suggest that the PDF is designed to download and execute a second-stage payload. The ClamAV detection confirms the malicious nature of the file.

Heuristics 7

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
  • ClamAV: Pdf.Exploit.Agent-36078 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36078
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0005.bin
1399dfe37ab9ed4b9f42c4d4855fcb102c9468913bea732f94c8c9f42bf002d8		 pdf-embedded-file PDF EmbeddedFile object 5 at offset 0x1D5 13198 bytes

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