PDF malware analysis — malicious · df472809b1d7f73d

MALICIOUS

PDF

13.1 KB

MD5: 16ccba638d57e40f3c1ba576f77728a8 SHA-1: 2046125d977dd686497ffc22ebd63440b4593922 SHA-256: df472809b1d7f73d5312623e99c162b8abd6eadb4815af8489ba7c6d206b410b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2007_5659 heuristic specifically points to the exploitation of a known PDF vulnerability using JavaScript. The ClamAV detection further confirms its malicious nature. The presence of deobfuscated JavaScript files suggests the execution of a multi-stage payload, typical of exploit kits.

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-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `7d195bdd89779f3ef4df9c7bb0c3566d971b320fcfb682cc765a42cdea6f8ae9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12191 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `47a12ff42859a81ddbfb4d85553db677d7d75c8f24452041e2be65e06cf18bfb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	5101 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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