PDF malware analysis — malicious · 948653fe7c06282d

MALICIOUS

PDF

13.1 KB

MD5: 32d5240a084ca4f4bfd437e09fd76a99 SHA-1: ae0ebd09c95476c0113487231ee734a9d7de274e SHA-256: 948653fe7c06282da899c31c6039fabb149fdddb255962d602b4f7cd6ca3b8b2

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified as malicious by ClamAV (Pdf.Exploit.Agent-36062). Heuristics indicate the exploitation of CVE-2007-5659 via the Collab.collectEmailInfo method, which is used to construct and evaluate JavaScript. Deobfuscated JavaScript files (legacy_pdfkit_stage_000.js, legacy_pdfkit_stage_001.js) were extracted, suggesting a multi-stage attack likely involving the download and execution of additional 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` `1e759a85f030b359cfa8a6a0a0f93ed4f30a0a2c95626c715043fa171cfc3e51`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12912 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `f6d3a62f08e52ddf05f1335b4fd41d03704de2c058ce0f4fdd69404a04c18f35`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5398 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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