PDF malware analysis — malicious · ebcb2c09e08d395f

MALICIOUS

PDF

4.4 KB

MD5: be3ee37edf78ab42ed46e6e480af9c47 SHA-1: d203f3c2f91b03571db094d73dd6fc330909e5ca SHA-256: ebcb2c09e08d395fcbc08d9dfe54b978838e27f1dd0590b425e7c6fb096bdc43

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that utilizes eval() and String.fromCharCode(), indicative of obfuscation. The critical CVE-2008-2992 heuristic confirms the exploitation of this vulnerability via util.printf to decode and execute JavaScript. This script is likely responsible for downloading and executing a second-stage payload, leading to the malicious verdict.

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` `c7dbbd1df7fce8bae0b21a6a98d9f2a8ceb38eb1d695c1585dd4e8880eebec16`	pdf-javascript-stream	PDF /JS object 5 at offset 0x107	22121 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` `688d446e213c2592b7e007057c4c7b316b5f51dc26f6c12e9cc0c5c029260ef2`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x115	6517 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.