Pdf.Dropper.Agent-1828741 PDF malware analysis — malicious · 5d20107eaedf0c9a

MALICIOUS

PDF

3.4 KB

MD5: 545447a0a550d0e62a8b7df480360ec2 SHA-1: 04c795e6eb0b74b2a87af83251e168c39957b33e SHA-256: 5d20107eaedf0c9a9a525efdc270f5f6dc0de96f47f0a0ba9dc4275fc23f62de

268 Risk Score

Malware Insights

Pdf.Dropper.Agent-1828741 · confidence 95%

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript T1566.001 Spearphishing Attachment

The file is a PDF that leverages the CVE-2009-4324 vulnerability via embedded JavaScript. The JavaScript, after being deobfuscated using unescape(), is designed to download and execute a secondary payload. This is strongly indicated by the critical PDF_JS_EXPLOIT_CLUSTER and CVE_2009_4324 heuristic firings, along with the ClamAV detection name.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 7

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (matched in decompressed stream)
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Dropper.Agent-1828741 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1828741
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `b798965a9cbf286a50a5d0c6ce9fa48dc52498a369782b46c37737929cc56ac2`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A9	2327 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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