PDF malware analysis — malicious · e991973844c3cc9e

MALICIOUS

PDF

12.5 KB

MD5: 30d263d0bb3617265c52656d0147ea77 SHA-1: 592ac6ecadf29fcb1fdb6860723738af40314afd SHA-256: e991973844c3cc9e1c358582c8460882c493b1bec5ffcdeec627ec0871f8e55f

138 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains obfuscated JavaScript, triggering the CVE-2007-5659 vulnerability via the Collab.collectEmailInfo method. This indicates an attempt to exploit Adobe Reader. The presence of deobfuscated JavaScript files suggests a multi-stage attack where the initial PDF likely downloads and executes further malicious code. The exact payload and its ultimate destination could not be determined due to the obfuscation and lack of network traffic analysis.

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` `31c85a5d264d501788d13aed6dc0419e1520f648284b5dd6ad71118f8de84695`	deobfuscated-js	z-percent hex-pair decoded JavaScript at offset 0x2E9	5340 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` `d4296fc2a36e697acc8bbebc903feeec4f9d0a890c729c1c3780eedb45e7ee4e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2E9	12700 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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