PDF malware analysis — malicious · 95f18fdbf5b9c115

MALICIOUS

PDF

12.7 KB

MD5: e9412ecf7263fd6998dc1adb89f6b0e9 SHA-1: 13715d83920d354e5ffbe5a94124486f6a100ede SHA-256: 95f18fdbf5b9c1156c57f26fbb9b2bf5924c3a45538cc4714e3633519f7c6b16

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically using the Collab.collectEmailInfo method. This technique is commonly used to bypass PDF security features and execute arbitrary code. The presence of deobfuscated JavaScript files suggests an attempt to download and execute further malicious content, characteristic of a multi-stage attack.

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` `3af2d6f5f8d39baff03a0e0f05e52e0e5c824ab7c21575579b6054f365e0eeb1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12474 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c6622615f5e80e37d902e9281fb77de263cdb72ca6871ca8c8cbb298111bf08e`	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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