PDF malware analysis — malicious · c60baf5ad2572a23

MALICIOUS

PDF

11.5 KB

MD5: 081a58dedafdd20be4cf9c3d4def552c SHA-1: c7a6a9411ff1db8c4aca4c768ace74a77189bc28 SHA-256: c60baf5ad2572a23151eb886dbbcdf8f844e75ba9a792e2747a6f4c26f08e5f6

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, specifically identified as exploiting CVE-2007-5659 via the Collab.collectEmailInfo method. The heuristics indicate that this JavaScript is deobfuscated into two files, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js. This suggests the PDF is designed to leverage this exploit to download and execute further malicious content.

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-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `595dda1ab7e06ff3b88ac86149dfe689e61536142d08155072f16d044f243839`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11663 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `8265a93b07804de245fa49c983b903567e69cd716006361c78d67a03c8f3c511`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4879 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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