PDF malware analysis — malicious · 93332c8ebf03a93e

MALICIOUS

PDF

12.0 KB

MD5: b124c4c96518c8dd6021134c21179a63 SHA-1: 5bfa7b13da3efb75ab5c9a8265304f1c5efe2bf2 SHA-256: 93332c8ebf03a93ed03f5585f387f8e41701abc28b7677cf62c1c62a328d86b6

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified as malicious by ClamAV and heuristics targeting CVE-2007-5659. The JavaScript is obfuscated and likely intended to download and execute a secondary payload. The exploit leverages the 'Collab.collectEmailInfo' method, a known vector for PDF exploits.

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` `d3170a590e6b953eaae42cd467037998868429d5831b1623a68f1f1f5655cb37`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11703 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `868e7ef19f41d37b7c4a7580975dca34bd3fdc1be3c1dd8c84e897f84af431b5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4774 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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