PDF malware analysis — malicious · 2b7477aae5db6162

MALICIOUS

PDF

161.3 KB

MD5: 491386ac5fa08d2290ed4a0d0762a6e7 SHA-1: 87599e0b1e8f7655d0de935811e636ffec211333 SHA-256: 2b7477aae5db6162c758994d8c2dc0833d227e56bb19af1e800393e29ecb7929

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment T1204 User Execution

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic firing suggests exploitation of a known vulnerability in PDF readers. The PDF_UNESCAPE heuristic indicates obfuscation of the JavaScript content. The extracted artifact 'javascript_obj0008_000.js' is likely the deobfuscated payload. The overall pattern suggests a malicious PDF designed to exploit a vulnerability and execute arbitrary code, likely for downloading further malware.

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)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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_obj0008_000.js` `79ac88f436b51373b3d63129b179a732c2091c21fbb474d463be919bd00b2153`	pdf-javascript-stream	PDF /JS object 8 at offset 0x2D1	3487 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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