Malicious PDF — malware analysis report

Static analysis result for SHA-256 97414dfc1e336f33…

MALICIOUS

PDF

210.6 KB
MD5: 38a6ba48a93ed441f2feacb55d11efdc SHA-1: 1beb39526ca28edf4528f3b3962acff0949dc5de SHA-256: 97414dfc1e336f33b74d2dddd12ad1f9eda7dadeea454e87ae643c6899439abd
184 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript and a RichMedia (Flash) object, both of which are flagged as critical for exploitation. ClamAV detections confirm this, identifying the file as 'Pdf.Exploit.Agent-35955'. The embedded JavaScript stream is likely responsible for initiating the exploit chain, potentially downloading and executing further malicious content. The presence of an embedded file further supports the likelihood of 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
f37f8e6510cdd741293d711585f83b96211657c854c5e24dccab1d7f6d79cb78		 pdf-embedded-file PDF EmbeddedFile object 16 at offset 0x2E072 52647 bytes
Detection
ClamAV: Pdf.Exploit.Agent-35955
Obfuscation or payload: unlikely
javascript_obj0006_000.js
f5b992f1d400ac18842903b7e19537948af08d057a3e860b82f9356616be9fb5		 pdf-javascript-stream PDF /JS object 6 at offset 0x13E 6526 bytes

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