PDF malware analysis — malicious · 298147c545fb699b

MALICIOUS

PDF

4.5 KB

MD5: f1a01d77cab78089d19720bfabf699a2 SHA-1: 161d2a7a346a0f502addf26fae82a483ccc6a8eb SHA-256: 298147c545fb699ba9bcdcd5e3dbea89abdc047d41e236acb3a4d52c50d58705

128 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that is obfuscated and uses eval() to execute. The critical heuristic firing indicates exploitation of CVE-2008-2992, which involves a numeric character-code string decoded JavaScript. This script is likely designed to download and execute a second-stage payload, contributing to the malicious nature of the document.

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` `83f84179556e8cb9b2dab9c838c07f1594d4783c2dfbc9e447804d8fb47335fc`	pdf-javascript-stream	PDF /JS object 5 at offset 0x107	22139 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` `e25a8f22a9b08a48e472916307cf15f8c678dcabad7be2e56378ae9d9e0ce324`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x115	6576 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.