PDF malware analysis — malicious · 2379ead5d34bf723

MALICIOUS

PDF

21.3 KB

MD5: 696058b61761c81be24b50f3da99757b SHA-1: a0b2bae956245c38a493c17d884ccfe49a6ffaee SHA-256: 2379ead5d34bf7237192d75fceb9b63d8d7c85fdb748eacc875e7432a750921f

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that utilizes eval() and unescape() functions, indicative of obfuscation. The critical CVE-2008-2992 heuristic firing confirms the exploitation of a known vulnerability via printf-style string formatting in JavaScript. The embedded JavaScript streams and deobfuscated JS files suggest the primary goal is to download and execute a secondary payload, likely from a remote source.

Heuristics 5

util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `cadc3f84207f46a04daebe277fa5fc88b4fc5e52f77c193346563d61a67a7129`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3887 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`javascript_obj111712_001.js` `c04c8fa2c02bba6e58256375cea50242b18a4050218874063cc49020af9885da`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x10F3	12679 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).
`javascript_obj111713_002.js` `b92a89c0b05a142757d3c720b5988ca93d6736b30507659735145f53b259788d`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x42B0	4618 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `a63d87f2b143513c65d1743d1dc1458eace0797e16ff17319fa0a362817b3dff`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x10F3	1413 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `df2e8f38acbcede11c3621c62802a425613ee3b105933e1debbf6452a55bb89f`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x42B0	384 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_002.js` `e42faf3606a0d3454d80994c4a46a3b6a07cab28bb78c6ecc51f39df29e15a2a`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0x10F3	1798 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).

Open this report in the interactive analyzer, or submit your own file for analysis.