Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb74493f7d0d977f…

MALICIOUS

PDF

2.9 KB Created: 2005-09-29 09:27:34 UTC Authoring application: Acrobat Distiller 8.2.0 (Windows)
MD5: 047d6b52ed6a6d31b55e5146ae329c1a SHA-1: 642ce174680773f989304ba60368de754d449dfe SHA-256: fb74493f7d0d977fb9014d3c54958361b483ed6f392d4ecea29d14f2023a32d5
162 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution T1566 Phishing T1566.001 Phishing: Spearphishing Attachment

The PDF file contains embedded JavaScript and an XFA form, which are commonly used to deliver exploits. Specifically, the CVE-2010-0188 heuristic indicates an exploit targeting Adobe Reader's LibTIFF component. An embedded file, 'embedded_file_obj0004.bin', was also extracted, likely containing the secondary payload. The ClamAV detection further confirms the malicious nature of the file.

Heuristics 8

  • 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-36015 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36015
  • 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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0004.bin
ce37b786be4902cd1bc771a4ba4132f275332835a99666a08955c2ade4cbedc5
pdf-embedded-file PDF EmbeddedFile object 4 at offset 0x1D5 12826 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).