PDF malware analysis — malicious · e783695f3454b711

MALICIOUS

PDF

30.3 KB Created: 2009-05-01 21:21:45 Authoring application: ghjkSFghjkCPx (via afdsdgf)

MD5: 5f6fc4dd4f6d074a4f42bf9c73a5870c SHA-1: 8f06f711990101438198d5ed40f305a1f532cecf SHA-256: e783695f3454b71112be0956b846c0b601af411458a36e49a989dd0e07574ecd

178 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 ClamAV detection 'Pdf.Exploit.Agent-35587' further confirms its malicious nature. The embedded JavaScript appears to reconstruct the string 'tp.splt' which is likely a URL or command for downloading and executing a secondary payload. The obfuscated nature of the JavaScript and the lack of specific indicators prevent definitive family attribution.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35587 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35587
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.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `2757dd435f02094fc4a71e62dfbb053a1e6b2ff2a38a8fdc153d2e4ce3ba2fb6`	pdf-javascript-stream	PDF /JS object 7 at offset 0x21C	29815 bytes
Detection ClamAV: Pdf.Exploit.Agent-35587 Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `85263afe3dd4c77bf2a62b7258db439963d3e9e99164f7bef2b749de9c464c10`	pdf-javascript-stream	PDF /JS object 7 at offset 0x21C	28759 bytes

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