PDF malware analysis — malicious · bd2c23e24a016e49

MALICIOUS

PDF

12.4 KB

MD5: 32e13500ac8bc7dace2ecda3125973ce SHA-1: c77d3641fe45cab3010e789fd123eb4654fca42a SHA-256: bd2c23e24a016e498910b32df1e605e8f8a8adaa57356c8920a9150c5368ced4

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE-2007-5659 heuristic indicates the exploitation of a known vulnerability using JavaScript that is likely responsible for the malicious verdict. The presence of deobfuscated JavaScript files named 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js' suggests a multi-stage attack where the initial PDF dropper likely downloads and executes further malicious code. The exact payload and delivery mechanism are not fully discernible from the provided evidence, leading to an 'unknown family' classification.

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` `20b0a1d854e0bc054eefb8471cb7f615a49f428aef4d01545023ec37534e743b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12033 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `b5552012ba568632be330e6a950a5d0db92584c5c500dcabe76e98d2b652396c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4949 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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