PDF / .TMP malware analysis — malicious · 3270f9386aff0443

MALICIOUS

PDF / .TMP

1.95 MB

MD5: 58ccdb062d90fb16bf6fcf165fecbf4a SHA-1: 4cb572a309895b49a1f3eb589614e4551a0a5c6d SHA-256: 3270f9386aff04433ec27c070101fdda095d1c636aeac801b5a27ffc31a36dbf

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious JavaScript

The PDF file contains embedded JavaScript, with multiple heuristics indicating obfuscation and the use of eval() and unescape() functions. A critical heuristic firing for CVE_2009_4324 (media.newPlayer) suggests the exploit targets this vulnerability. The embedded JavaScript is likely designed to download and execute a secondary payload, contributing to the malicious verdict. No specific family could be identified due to the generic nature of the exploit.

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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `9daf7713956f14e72edff4e8914942d60a9120716cbc9c9bed39d1925dde56c8`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1285 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` `b51f2881051e8d54d8c935cc625fc56f1f0c7da4e768b41036776d45e54cdc0a`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x497	260 bytes
`stream_002_off00000784.js` `38b52339e9a856ab6af94819c1948d280f31a9999385e5d9cd58cb403c68b545`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x784	256 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`stream_003_off00000852.bin` `3500b6bb551fc159b882e35c446c261eae11f873c47b84f904c31a73294ee7c9`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x852	5572 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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