PDF malware analysis — malicious · aedfdeee2ed01c3b

MALICIOUS

PDF

8.2 KB

MD5: 102584d8c73d935fd2b1985e38cc6278 SHA-1: c4767e86dd6f4bdaa9f14d6b9c516d010c79863f SHA-256: aedfdeee2ed01c3b6454fe091d834270574156c4f40f8f643c2f140eba4a569d

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, triggered by the CVE-2007-5659 vulnerability related to 'Collab.collectEmailInfo'. Static analysis indicates this JavaScript is obfuscated and likely responsible for downloading and executing a second-stage payload. The ML classifier strongly supports a malicious verdict.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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)
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` `570c15e759bbcae32cb0076bf90eb3b449eaf1c3aa054aa1028ee06efcf76e6f`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	41 bytes
`javascript_obj0013_001.js` `81347f0efd60596d8d10b438cea2dc510bdc7585df628b8c1cd8a966ffd9768d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x369	15398 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `ba759ff9a0fdb798eeb0d8a4c26d59656dc6fab084bcec95ac5b97da057eef30`	deobfuscated-js	reverse-string concatenation decoded JavaScript at offset 0x369	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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