PDF malware analysis — malicious · 7dbd6a911cd82189

MALICIOUS

PDF

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

MD5: 9b0ec5f27b015cd37d18c020bf85c9b7 SHA-1: 1e9f79e9587ff8a16357c62e9955c05e55197811 SHA-256: 7dbd6a911cd821899e9a3ee219fb03b3f64a98b788633e8c4d2473328ad02a69

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF contains embedded JavaScript with multiple eval() calls, indicating obfuscated code execution. ClamAV detection as 'Pdf.Exploit.Agent-35587' strongly suggests exploitation. The ML classifier also flagged it with high confidence. The script's obfuscation and use of eval() are typical for PDF exploits attempting to download and execute a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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` `d19bac30a9b12e6accce7297110d591cee30b87069087b29d32083f753e4e6ea`	pdf-javascript-stream	PDF /JS object 7 at offset 0x21C	29959 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` `932f67b12c8925d5e2252d7a4f7044fe55efb4d46552bfed7f6fdd5760f189ee`	pdf-javascript-stream	PDF /JS object 7 at offset 0x21C	28953 bytes

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