PDF malware analysis — malicious · cd018b6530850b7b

MALICIOUS

PDF

12.6 KB

MD5: bf982910a1582ce6bf18b4b7bf09028b SHA-1: f0760f1d9fa1e52777c85117e82b785650b67adb SHA-256: cd018b6530850b7bc5285c087a7d0d366d668a06185ae3c52839b73eaf3c4187

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2007-5659, indicating an exploit attempt. The embedded JavaScript, deobfuscated into legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, is designed to download and execute a second-stage payload. The ClamAV detection further supports its malicious nature.

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` `cd6545bd0afc0132417dcd1c37372797855ab4c0ddde4a61b2cb1109feb38a9f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12391 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d3728ca94cbcf48c97f4d3ed34e74e2260234706c85a7694dce2dd67e3035539`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5106 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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