PDF malware analysis — malicious · 0f14ade00dda2f56

MALICIOUS

PDF

7.9 KB

MD5: 9cf837984adaefc8fd0ed91ae80a04f2 SHA-1: e39ac48649a1a729ca6e747956e85ba0e079a3fe SHA-256: 0f14ade00dda2f56d33b1f8bfe212d265df390fd163672e3b71127dbb7f16632

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript that is obfuscated and uses a known exploit (CVE-2007-5659) for execution. The JavaScript is designed to download and execute a second-stage payload, as indicated by the ClamAV detection and the ML classifier's high confidence. The specific payload URL or its behavior could not be fully determined due to the obfuscation and truncation of the script.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.Dropper.Agent-7011196-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7011196-0
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_obj0001_000.js` `e0d28875fdd88600b3d2d8f9ce6eae5169efd6db1bd19d516a7e3c2edce4a3ec`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	32 bytes
`javascript_obj0013_001.js` `dddff431bee9f01908a0ccb1b7491ac5d901dc08adc6a01e90aeb1fc4aae6c8e`	pdf-javascript-stream	PDF /JS object 13 at offset 0x357	14448 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `312d2abca28a5970f927e92d56d192dd752a814fced681abc91c0f64d3124004`	deobfuscated-js	reverse-string concatenation decoded JavaScript at offset 0x357	2043 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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