PDF malware analysis — malicious · fdde04d54ea7de58

MALICIOUS

PDF

13.0 KB

MD5: e3939aaa70b763444f10530b3ec8b31d SHA-1: c5a0341cac18cb6f3ba57f509f8443d09157a931 SHA-256: fdde04d54ea7de582510db1a0847857ea8f97b2bd02f35fe02616a8086ce8917

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The critical heuristic CVE_2007_5659 indicates the exploitation of a PDF vulnerability using JavaScript. The embedded JavaScript streams, particularly 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', suggest a multi-stage loading process. The ClamAV detection further confirms its malicious nature. The overall pattern points to a downloader or exploit kit leveraging a known PDF vulnerability.

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` `d2836c0e744c196ec36de12979bd15ab311292ea51ff003de902fccea16fd42b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12713 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d4db240d242b6ada9db64818ee4411db5ef0783a1fe4847c30d36ab1e16c2775`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5288 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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