PDF malware analysis — malicious · f1c254eb60b7767e

MALICIOUS

PDF

25.0 KB

MD5: 60affa1f4bcf8a1b4b2c1c312577b454 SHA-1: 79c7dac7dd4fe1f5b4d8ae7135e68fcaf7c69b73 SHA-256: f1c254eb60b7767ee2a7bbcca1e3009cd596fec9ff646bdf8733cfec41af02e4

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes eval() and unescape() functions, indicating obfuscation. The critical CVE-2008-2992 heuristic firing confirms the exploitation of a known Adobe Reader vulnerability via util.printf() to execute this JavaScript. The script's primary function appears to be downloading and executing a second-stage payload, as suggested by the presence of multiple obfuscated JavaScript streams and deobfuscated stages.

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` `273438701c9964b9ad09f867cdb6bf21de0bcff026ead59da2121fe1135770a5`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3996 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` `87b7d15f32af8c2977a665dc9c5c8532f339f4791ffef3cc363d0e4eab81740d`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x1160	15945 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_obj111713_002.js` `06f9d06bb019f0f1b0f4312dc8eabbc3dab687abb90e29dec1f09185ed0623d0`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4FDF	5114 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).
`legacy_pdfkit_stage_000.js` `bfebb386e90b43e54700a38219bc4e5ec9e218b81e4e8d4f380e38696362af6e`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x1160	1419 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 0x4FDF	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` `4fb4a367952aa0113d546adf95c5d011e9cb11c21ff51a403c67374b780e717c`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0x1160	1804 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.