PDF malware analysis — malicious · 2a35526480865ebb

MALICIOUS

PDF

12.3 KB

MD5: f97abdf15ab6fca2e7d5cf7f85d2dcc2 SHA-1: 65c4f8b9b278cdea2fd83a64c7c2bbd45ca71ad8 SHA-256: 2a35526480865ebbfe43616dfa2076dbe9cb5003ead5f19cfebc1544a4c2e518

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The 'CVE_2007_5659' heuristic specifically points to the use of Collab.collectEmailInfo for JavaScript execution, a known exploit technique. The extracted JavaScript files suggest a multi-stage process, with the initial PDF likely acting as a loader for further malicious activity. The overall confidence is high due to the direct exploit detection and the presence of obfuscated JavaScript.

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` `dfb1c8bd87d62c7adb0fb42562e7dd75638a2beec5b7e2b2879e6b89f694cd91`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11961 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `45ac84bdaf839d65b31cb980c44878818d6b3da930773ff66df5d1a5d6111dbd`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4930 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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