PDF malware analysis — malicious · e5720c7ccb91d193

MALICIOUS

PDF

12.2 KB

MD5: 2f1d334354a43045f36b31e68ecfb1c1 SHA-1: e80fc781a8eb37f32a0d12557efd2fb924111e9b SHA-256: e5720c7ccb91d193cdd27bfbcbf47cf9db809fa15d24be75b27dfcefd321aa5b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability. This JavaScript is designed to execute, likely downloading and running additional malicious content from the extracted files legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js. The ClamAV detection further confirms 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: Pdf.Exploit.Agent-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `02ff2091c2c95d3fced1550725b3249417973921bf328762f795f39f6f31d193`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11942 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d0da481e2d578d41e51ca32797920cc4271b1a80abe16aa32a4b403003f228dc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4895 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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