PDF malware analysis — malicious · 3194c34fdd526084

MALICIOUS

PDF

12.9 KB

MD5: c49dba35d19814d2a4a2fa34c57026da SHA-1: b270bd409311eab3530630fbd0e1e5a554e21ddd SHA-256: 3194c34fdd5260844de7ea914205a9985f82be69bf2ac7e43738b89f2aaf832f

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The file is a PDF containing embedded JavaScript, identified as malicious by ClamAV and triggering critical heuristics related to CVE-2007-5659. The JavaScript is further processed into two deobfuscated JS files, indicating a multi-stage exploit. The primary attack pattern involves leveraging the CVE-2007-5659 vulnerability to execute this JavaScript, which is designed to download and execute a secondary payload.

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` `3c515727209acf1745f9c041e946f09a28ff846d5c7e679b6740203a3bd5ebbe`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12535 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `3e5b0a1d5684a1a29b8421f6b86253b78ac96c1a8d82b23a2b885f53c5d569bc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5226 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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