PDF malware analysis — malicious · 8d5e5c26c095fb72

MALICIOUS

PDF

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

MD5: 8802000591e1b4c829a1eeb4b7c35c81 SHA-1: 0f9283ea73ba16b763b408d0e233e25285f6d291 SHA-256: 8d5e5c26c095fb724543445cfb8573163caee02f18c4cda4d4862a3f5c780174

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 critical ClamAV detection of 'Pdf.Exploit.Agent-35587' strongly suggests a known exploit. The embedded JavaScript, specifically the reconstructed string 'tp.splicit', is likely used to download and execute a secondary payload. The obfuscated nature of the JavaScript and the lack of specific family indicators lead to an 'unknown family' classification.

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` `7028c362861ab7c89f5cf03d6d08e856b535c04d24f495bfa320fe6e38f9140e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x21C	29644 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` `1b6633c65a823c1aacad9d7e7ab168af376cf3f07292397159832bdcd7e1bcbe`	pdf-javascript-stream	PDF /JS object 7 at offset 0x21C	28680 bytes

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