Malicious PDF — malware analysis report

Static analysis result for SHA-256 b81cdc7ceb060ffa…

MALICIOUS

PDF

3.3 KB Created: 2005-09-29 09:27:34 UTC Authoring application: Adobe PDF Library 8.0
MD5: 2c9cca5b61918de1752b409bd7af92c7 SHA-1: 4bd45cafe5fb757cca894858aee4be716b040f89 SHA-256: b81cdc7ceb060ffaf28650e2f8835f23251f923324b9aeae7a95bf2526bcbef4
100 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and an embedded file, and triggers a critical heuristic for CVE-2010-0188, which is an exploit targeting Adobe Reader's handling of TIFF images within XFA forms. This indicates the file is designed to deliver a payload via this specific vulnerability. No scripts were extracted, so the exact nature of the payload cannot be determined, but the exploit itself is the primary indicator of malicious intent.

Heuristics 6

  • 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.
  • 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_obj0004.bin
a91c63441aa78b8fef6ea7ed2ab362df084d589a6d8041823c178033e7f4b38b
pdf-embedded-file PDF EmbeddedFile object 4 at offset 0x1C6 35879 bytes