PDF malware analysis — malicious · 29feed2dfc1f25c4

MALICIOUS

PDF

12.0 KB

MD5: 2caa7ab10c049d780364e9f9f82e202c SHA-1: 0cb12524e1fc367f5492af33855123e9e188d773 SHA-256: 29feed2dfc1f25c49badb96b5a4d6479f96f3b28d6cd64f581503cd16282175c

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic specifically points to the use of Collab.collectEmailInfo for JavaScript execution, a known method for exploiting PDF vulnerabilities. The presence of deobfuscated JavaScript files (legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js) suggests that the script is designed to download and execute further stages. The ClamAV detection further confirms its malicious nature. The attack pattern is consistent with a PDF-based exploit kit aiming to deliver 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` `4d764b32466fb55faa62244ccbf68776b5fadb35ea49f67441a159ef20d68725`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11705 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `7d48782780eef71931c41f3386c088ab246ed9c0fdfaac320f7f1e1f3b8cbc17`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4856 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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