Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea87da716f2b024…

MALICIOUS

PDF

9.7 KB Created: 2009-02-19 14:45:49 -02:00 Authoring application: Writer (via OpenOffice.org 3.0)
MD5: 45dd42b6214d0255c233ae82629e68be SHA-1: 47184c8a6b98bd98de965f33940434bf67413704 SHA-256: 9ea87da716f2b0242af14678f1b5586b4f06559b2e903f0feecddd08a30fd2dd
98 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_EVAL'. The 'PDF_LAUNCH' heuristic suggests an attempt to execute an external action. The presence of an obfuscated JavaScript stream ('javascript_obj0027_000.js') strongly implies the execution of malicious code, likely to download and execute a second-stage payload. The document body is unreadable, but the script and launch actions point to a malicious intent.

Heuristics 5

  • Launch action high PDF_LAUNCH
    PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
  • 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.
  • 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
javascript_obj0027_000.js
4460b4017dfeda22c532d6ab0cbc2f5236b1f75022b5c52ac8a5d68f98eac67a
pdf-javascript-stream PDF /JS object 27 at offset 0x1C1B 3298 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).