PDF malware analysis — malicious · f045b0d90db2ed8f

MALICIOUS

PDF

9.1 KB

MD5: 024306683563f97862b7d8bcc4dbe1ef SHA-1: e50678e4d865b53114276111d47b92c952633cca SHA-256: f045b0d90db2ed8f6fedad3da9979fa5fe8fd44571fa5863e096166294bf2729

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File T1071.001 Web Protocols

The PDF file contains embedded JavaScript, triggered by the CVE-2007-5659 vulnerability. The heuristics indicate that this JavaScript is designed to be executed, likely for the purpose of downloading and executing a secondary payload. The ClamAV detection name 'Pdf.Exploit.Agent-35905' further supports its malicious nature. No specific family could be identified, but the attack pattern is consistent with PDF-based exploit delivery.

Heuristics 6

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-35905 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35905
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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` `d8a6b4ad1abf04d0c4a4f89535cfb57f7312edef25c443f4e844c8ec9d0929dd`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	352 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `747d6edb51272201ee47e632425207bb6dca49f68dc7b41fe1846c5ed827c995`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	11995 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c3bef5499844cf673e4dd460ce46b3304dda9d55af0e1a26f2cec6dc497569ac`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FE	5019 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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