PDF malware analysis — malicious · ea2bcfc8a42e7768

MALICIOUS

PDF

1.4 KB

MD5: 702309937e754b76512fe09e35f8d012 SHA-1: 47e85bea1e7048c84510892369dcf9f91defd847 SHA-256: ea2bcfc8a42e77686c3cc2950d89adac9bdf613de9bdbbff962c310abd289c90

196 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1071.001 Application Layer Protocol: Web Protocols

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic firing suggests exploitation of a specific vulnerability within the PDF structure. The presence of unescaped JavaScript and the ClamAV detection as Pdf.Dropper.Agent-1829057 strongly suggest this is a dropper designed to download and execute a secondary malicious payload. The extracted JavaScript files, though not directly analyzed for content in this summary, are part of the execution chain.

Heuristics 6

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)
ClamAV: Pdf.Dropper.Agent-1829057 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1829057
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `8a3ee02a41d2c3b554a6c3b08ddd2271d8c7d2e293d50fced98502110c89023a`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1259 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `4a5d3bbf4ae34133a48b9b1082787afe693388805efe4f8aabf7e2a7d6af71ce`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x483	258 bytes

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