PDF malware analysis — malicious · 483be9db8189d724

MALICIOUS

PDF

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

MD5: 541304952d2b53e07607953c268300b5 SHA-1: 0112d5399188f175b5b0ff6376e461e486eceaa3 SHA-256: 483be9db8189d724bf02651c428de8ca58ecbc274ca188016a3abb9ea3676e60

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 of 'Pdf.Exploit.Agent-35587' strongly suggests a known exploit. The JavaScript appears to be obfuscated, but a reconstructed string 'tp.s' was identified, likely representing a malicious file or URL. This points to an attack pattern where the PDF serves as a dropper for further malicious activity.

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` `44be59ea48fac836ee07a998a499f751c64122ebc4be05ec1b58902e937ebc00`	pdf-javascript-stream	PDF /JS object 7 at offset 0x21C	29849 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` `c608ef8cc9633d06b9fcc6015387045ec672ff2113f2b2082438f80ff15d1863`	pdf-javascript-stream	PDF /JS object 7 at offset 0x21C	28873 bytes

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