PDF malware analysis — malicious · c604461fc4bc7bd5

MALICIOUS

PDF

12.6 KB

MD5: 0ce34350caf497b0e16d1ef44792647b SHA-1: c4c0cdbc47deb89d6f4dd9903e6cbefbe1e0026d SHA-256: c604461fc4bc7bd574865577ea1a94547a4bbae1c29cf598d8fc0b594619b619

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability. The heuristics indicate that this JavaScript is used to collect email information and likely download further malicious content, as evidenced by the extracted JavaScript files. The ClamAV detection further confirms its malicious nature. The exact payload and delivery mechanism are not fully discernible from the provided artifacts, hence the 'unknown family' classification.

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` `9bdf8e30123785463d2d74aa45cff6f47dd43921026dccefea4fa1298f627d1f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12374 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `4ee617ade1bf7025493fed0d6ebcfb5731ba02d6e69bd67bdeb0586c34060c40`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5111 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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