PDF malware analysis — malicious · f1a6fcb448df7075

MALICIOUS

PDF

12.2 KB

MD5: 370fd60cc2eac335f02291b623f49a5f SHA-1: 9b8b4573508b1f110376a26754e0913585b5c9e9 SHA-256: f1a6fcb448df70757de9e44c3d5ea3c71f1d7a03d47a35bee8c289176fb7f3d2

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link: Malicious JavaScript T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability, specifically targeting the Collab.collectEmailInfo function. This exploit is designed to execute arbitrary JavaScript, which in this case is likely used to download and execute a secondary payload, as indicated by the presence of deobfuscated JavaScript files. 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` `b77f6f2f0cac3d702ec4546fd93167946920b2ae639c0cb97690324d9581af21`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11959 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5ee191081900c138fca4b39affcd18da1815313f1de8e31e587ef6c1982a7406`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4916 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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