Malicious PDF — malware analysis report

Static analysis result for SHA-256 d55d09efe95efa10…

MALICIOUS

PDF

58.7 KB Created: 2009-08-30 00:20:17 UTC Authoring application: AdobePS5.dll Version 5.2.2 (via Mac OS X 10.5.8 Quartz PDFContext)
MD5: 1f6ddb0acf150924cb5bddfde7cdb26c SHA-1: e5dfcdbf0aff7c6916aba5253b1777ceb87b0327 SHA-256: d55d09efe95efa1094e051dd3805c84af160e01c89b3b62117a9edc40cb20c68
264 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File Execution T1204.002 Malicious File Execution: User Execution T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains JavaScript actions and embedded streams, including a critical heuristic firing for an embedded PE executable payload. ClamAV detections confirm the presence of Win.Trojan.Swrort-5710536-0, indicating the PDF is designed to deliver and execute malware. The embedded executable is the primary payload, likely intended for further malicious activity.

Heuristics 7

  • Launch action critical PDF_LAUNCH
    PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
  • Embedded Windows executable payload in PDF stream critical PDF_EMBEDDED_PE_PAYLOAD
    PDF stream bytes contain an embedded Windows executable with a verified PE header. Exploit chains often hide droppers inside ordinary streams rather than standard /EmbeddedFile attachments.
  • ClamAV: Win.Trojan.Swrort-5710536-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Swrort-5710536-0
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0016_000.js
eff4a0943aaff2d99cb5c8666337775c91d4d5f687782df94d2c5fc77becde7f		 pdf-javascript-stream PDF /JS object 16 at offset 0x1252 53 bytes
stream_003_off00003acf.bin
c40da68442a72848b62dffc341cb67fafc49d3ca6b04a909bcd8152b919920c0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3ACF 73802 bytes
Detection
ClamAV: Win.Trojan.Swrort-5710536-0
Obfuscation or payload: unlikely
icc_00_off000005b1.icc
2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e		 pdf-icc-profile PDF ICC profile at offset 0x5B1 3144 bytes
font_00_sfnt_off0000130d.bin
ac6efb60566e49cb2cc918348e471fe3f01c12322c4aa7ec58d84bf608cab323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130D 13900 bytes

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