PDF malware analysis — malicious · 5232e566d50f3634

MALICIOUS

PDF

4.2 KB

MD5: ab4063d9cff48f0fbd5cc50a489a283a SHA-1: 7f59ee1989301f7e7a602c9c3274eb097549861e SHA-256: 5232e566d50f36344d7375753ebe0575647d1ed656adf960a56b1a497971e7a8

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is obfuscated and uses eval() and String.fromCharCode. A critical heuristic identified the CVE-2008-2992 exploit, which leverages util.printf to decode and execute JavaScript. This indicates the sample is designed to exploit a PDF reader vulnerability to run malicious code, likely for downloading further stages.

Heuristics 6

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 (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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `b05862885195dba6ef7c3bedc007fb233a6aff42e406e8a9846dd175e7e8220f`	pdf-javascript-stream	PDF /JS object 5 at offset 0x107	22807 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`numeric_charcode_stage_000.js` `ab4347bc27f8b343108be61489f0a81fdc10698e98839f331dd64c39b83dbfe1`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x115	6700 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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