PDF malware analysis — malicious · 97d047badbf73658

MALICIOUS

PDF

12.1 KB

MD5: fa895fd18579dcf1d3db42a63dc2ea3d SHA-1: 3f102e133d0af32a7ec21a454ce8a8466df1bb20 SHA-256: 97d047badbf7365818ed4a8fb1a8750978144e5e994ce10ed01940b2a9c47d83

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by the CVE_2007_5659 heuristic, which is designed to exploit a known vulnerability in Adobe Reader. The deobfuscated JavaScript files, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, indicate that the script's primary function is to download and execute a second-stage payload. The presence of these JavaScript artifacts and the specific exploit trigger strongly suggest a malicious intent to compromise the user's system.

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: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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` `6f60a1053baafdc578f85eae84a2dc6d16775fbd66240d82cbfb7b4f4ff4e90a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	295 bytes
`legacy_pdfkit_stage_000.js` `d95663f21669ae3ce5ca3cef3be69e0cb73995f04a777f1ff3fc47b513f211cb`	deobfuscated-js	z-percent hex-pair decoded JavaScript at offset 0x2E9	5140 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `a7ff1994b34140b94e0428f400b1392a29dc0a61a05884738af6d7395f3a24a9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2E9	12222 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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