PDF malware analysis — malicious · 94603e8869bec676

MALICIOUS

PDF

12.6 KB

MD5: e0a95d14a8dd7cd86b81b7586211353b SHA-1: befc142cb5f32a7163a6a851daeab41446c76d2a SHA-256: 94603e8869bec6769bab3f785ee93d982b82b1d9aed0e46ee02356a8d6147fb9

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, flagged by multiple heuristics including CVE-2007-5659 which indicates exploitation of a known PDF vulnerability. The embedded JavaScript streams, particularly 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', suggest the execution of malicious code. The primary function appears to be exploiting the PDF viewer to run this script, which likely downloads and executes 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` `6f37408ac9e74485c380f2956063ed99990f96012b3529ee17c0aea289cc473c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12440 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d730d7ddd744a8b46ea65ebe5cb5cd18a7914597fe55bcb711bc1224d61d8a4a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5139 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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