PDF malware analysis — malicious · aa07391c16bcd1d9

MALICIOUS

PDF

12.9 KB

MD5: 152bf67e8c8e72865b57458ba4ba63b0 SHA-1: 6277402f55cc61265ed8aa49ed98366eb6bed951 SHA-256: aa07391c16bcd1d9c901bf5ae9c7d15a3bd8fc4c86d9b963e3bf66e3d2bc9b92

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The critical heuristic CVE_2007_5659 indicates the exploitation of a known PDF vulnerability using JavaScript. The embedded JavaScript streams, specifically legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, are likely responsible for executing the exploit. The presence of these deobfuscated JavaScript files suggests the primary function is to download and execute further malicious content.

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` `a2777517b8cd6dd85e194d3f2b08504bb60c6994a79a90fd5160c4e1275a30f1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12524 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c727a20df0888b5c12da9b3c292a4c2165e9977102e5df47f7e225cf48d2b20c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5186 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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