Malicious PDF / .PHP — malware analysis report

Static analysis result for SHA-256 cdc2ce76b2474130…

MALICIOUS

PDF / .PHP

27.5 KB
MD5: 5f9d6d23d830bcb46a0106564a3ecfed SHA-1: 0a518f891657719c99f59e41f143713cf84e4962 SHA-256: cdc2ce76b2474130974c3b644778761d5c8de3daee3a938008b9cfd5df216440
136 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. The ClamAV detection of 'Win.Trojan.Agent-36100' strongly suggests malicious intent. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, which is a common technique for malware delivery. The document body content appears to be obfuscated or malformed, providing no clear user-facing lure.

Heuristics 4

  • ClamAV: Win.Trojan.Agent-36100 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36100
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0008_000.js
16b4e60eba5bfc19c9f6230d7ae7e06a49e6c8ba42e25c08aebda15658eb944d		 pdf-javascript-stream PDF /JS object 8 at offset 0x1E7 27429 bytes
Detection
ClamAV: Win.Trojan.Agent-36100
Obfuscation or payload: unlikely
legacy_pdfkit_stage_000.js
34180d14eb01fc9e98364a6d76784feb426e170ee93bd4601431330ce5655bd2		 deobfuscated-js double percent-decoded annotation JavaScript at offset 0x1E7 15093 bytes

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