PDF malware analysis — malicious · 46ea951652cf9394

MALICIOUS

PDF

12.6 KB

MD5: a36675aaef9e5f2e0cdab506223eca5e SHA-1: ddc9d03ce286668de0eae8eed612e66d2c011f44 SHA-256: 46ea951652cf9394d754a9d15a0b17cfe48d42ba56b0c46dd216c6c39d5e0374

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by multiple heuristics including 'PDF_JAVASCRIPT' and 'PDF_JS'. The critical 'CVE_2007_5659' heuristic indicates the exploitation of a known vulnerability using the 'collab.collectEmailInfo' function to execute JavaScript. This script is likely designed to download and execute a second-stage payload, as suggested by the presence of deobfuscated JavaScript files ('legacy_pdfkit_stage_000.js', 'legacy_pdfkit_stage_001.js') which are often used in multi-stage attacks. The ClamAV detection further confirms its malicious nature.

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` `2bd29c7d63cb3243c6f36b412c90a269f78e1af0dcc87b7fa807b4fcb85a4e32`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12266 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c8257ed7ea26c87d3adc573f61145298c4b7381b5c560035078a91083c326790`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5082 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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