Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b8b6a3c4378f851…

MALICIOUS

PDF

58.9 KB
MD5: 8566af3450eacc847b3678d578cd4120 SHA-1: 8cf4ad6c77d016d95c625f751931b14aa97e9791 SHA-256: 2b8b6a3c4378f851476cf03c7873247388372bda95f2261a519b929f322022a5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and a Flash object, indicating an attempt to exploit vulnerabilities. The presence of `eval()` calls and ASCIIHexDecode filters further suggests malicious code execution. An embedded file, 'embedded_file_obj0003.bin', was also extracted, which is a common technique for delivering secondary payloads.

Heuristics 8

  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector (matched inside decoded stream)
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
  • ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX
    Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
  • 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
  • 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.
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/AcrobatAdhocWorkflow/1.0/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0003.bin
f0156a5c9cfac0444d237fb92b5b9731faaa34f807b3d583c1b88283feefed46		 pdf-embedded-file PDF EmbeddedFile object 3 at offset 0xA4B 26804 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
objstm_0019_00.bin
88397063e79e92e37ea3287606acab9c6e958bfe4a797cc9c66df3f8f72952d5		 pdf-objstm-decoded PDF /ObjStm 19 0 obj (inflated) 1315 bytes

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