Malicious PDF / .TMP — malware analysis report

Static analysis result for SHA-256 8dad8a84d48f2de7…

MALICIOUS

PDF / .TMP

167.7 KB
MD5: 0726c31ce61ef4f981eed3979efb65cd SHA-1: 762cbd23085b6623b78670d76d971fded6e2b28f SHA-256: 8dad8a84d48f2de7a061e3923b58c9b6c0aa769e3070e5305f7403e0332e5f4f
184 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and is flagged for exploiting PDF vulnerabilities, including RichMedia (Flash) and general JavaScript actions. ClamAV detection as 'Pdf.Exploit.Agent-35955' strongly indicates malicious intent. The embedded JavaScript stream, 'javascript_obj0006_000.js', is the primary mechanism for executing the malicious payload, likely involving the download and execution of a second-stage artifact. The presence of embedded files further supports a multi-stage attack.

Heuristics 6

  • ClamAV: Pdf.Exploit.Agent-35955 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35955
  • 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.
  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0016.bin
bf9dea6ff47dfb47c2f51b1fa9a09527dfe5e95399ccb2d043ba956b197360c9		 pdf-embedded-file PDF EmbeddedFile object 16 at offset 0x234BB 52647 bytes
Detection
ClamAV: Pdf.Exploit.Agent-35955
Obfuscation or payload: unlikely
javascript_obj0006_000.js
adddc6330c1fade3051c55a3e6d184f626d547a717e6ef8569bd3481d61d86ae		 pdf-javascript-stream PDF /JS object 6 at offset 0x13E 6478 bytes

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