PDF malware analysis — malicious · 912fbc062b8446d4

MALICIOUS

PDF

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

MD5: 50ee1359fc09ceedf657922dbb9a7f01 SHA-1: dfa91b808fa9544f893255c59ae404dcd723ee39 SHA-256: 912fbc062b8446d4f4752fe33d4b8cfb7015c9b665cda69d71963e9cd0b01cbf

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 embedded JavaScript streams, 'javascript_obj0007_000.js' and 'javascript_obj0007_001.js', are the likely vectors for this exploit, probably downloading and executing a second-stage payload. The document body text appears to be obfuscated script content rather than user-readable text.

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` `92acd8010b8a7d51c381b3e5b94f9824439f691b3ab29c39bdfadd2c6de331fa`	pdf-javascript-stream	PDF /JS object 7 at offset 0x21C	30305 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` `916fd6bc67d1191072d3ad0349ab8e38b117c31c1e16ee001a08e235df046d51`	pdf-javascript-stream	PDF /JS object 7 at offset 0x21C	29311 bytes

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