PDF malware analysis — malicious · 94801668eb01c465

MALICIOUS

PDF

11.5 KB

MD5: b24c7bde4ddc4e39185f28e23d92e85b SHA-1: 91412fdf373d3935210dfd9054ddf2de72c4c031 SHA-256: 94801668eb01c465259a1073ebf3c491788d4619f67f1ab7ce6fe7cab4cdd215

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 specifically points to the use of 'Collab.collectEmailInfo' to execute JavaScript, which is a known method for exploiting older PDF reader versions. The extracted JavaScript streams, 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', suggest a multi-stage exploit. The primary intent appears to be the execution of arbitrary code, likely to download and run 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-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` `dfda2b695d516732c17dbf3a2774646f282b27005dcbd3e8147199f5080481e7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11988 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d1bee648b7717a9471891d5371ed83d7d21918cc044b2578824428faded2a761`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4903 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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