PDF malware analysis — malicious · fa1c033b070cd571

MALICIOUS

PDF

1.5 KB

MD5: 0fee662050f21df857599dc49ca22170 SHA-1: 11630e743b31af860dd7b4fd36a1bb2ad228c9ee SHA-256: fa1c033b070cd5713bee01e29e5cff1a1bd333f177111c7872b9df09a6d93b27

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.007 JavaScript

This PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic suggests exploitation of a specific vulnerability related to media player objects. The ClamAV detection further confirms its malicious nature. The embedded JavaScript, particularly the unescaped content, is likely responsible for downloading and executing a secondary payload, a common dropper behavior.

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-7326748-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7326748-0
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `80d0531cfcfd5f75493ff3aeefeb43b6a7281077b49972807cd2675ac97439ae`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x197	294 bytes
`javascript_obj111712_001.js` `abc228bfb19591ff11e7274faa04792b9a43b92d1f9b17b0e5310f20a5f6d3b5`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x2B3	1992 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111713_002.js` `27f3b109bc63c59e2a8399ab722d92c7b35227805ca771c1aa8cfa43e62747e6`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x551	79 bytes

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