PDF malware analysis — malicious · ead25f8edbd1b94d

MALICIOUS

PDF

11.9 KB

MD5: 19b18d63df19f590abb5d4af4160f4d5 SHA-1: 9c6cb37a9d9d035cd7e0971bad83bda6833c4f35 SHA-256: ead25f8edbd1b94dae81ddf62f09821e217d1985893f704f82690ffb90aa2e8a

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. Critical heuristics indicate the use of CVE-2007-5659, specifically targeting the Collab.collectEmailInfo function, which is a known method for exploiting Adobe Reader vulnerabilities. The embedded JavaScript, particularly in the deobfuscated files legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, is likely responsible for downloading and executing a second-stage payload. The ClamAV detection of Heuristics.PDF.ObfuscatedNameObject further supports the malicious nature of the file.

Heuristics 5

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `6f60a1053baafdc578f85eae84a2dc6d16775fbd66240d82cbfb7b4f4ff4e90a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	295 bytes
`legacy_pdfkit_stage_000.js` `909901916fc3f628b0ce774ac200f5a81106aeeb1285f762515262471493acf7`	deobfuscated-js	z-percent hex-pair decoded JavaScript at offset 0x2E9	5055 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `ff1d91b50a510aced351ad570fa3a1dc1d350ee2b6c3549d0537d96b7f4d4468`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2E9	12173 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 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.