PDF malware analysis — malicious · fdf58d8874926f62

MALICIOUS

PDF

13.3 KB

MD5: 4c31eab131235b7068eb4088bd0d3aed SHA-1: ebbf91ceecdf3b88d3e9ee9c1f5c9a0d75c83d31 SHA-256: fdf58d8874926f62dd47a74c02c5de1d39a26acb39a29c7b69448aa5e5d9c886

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, which is triggered by the CVE-2007-5659 heuristic. This JavaScript is likely responsible for downloading and executing a second-stage payload, as indicated by the ClamAV detection name 'Pdf.Dropper.Agent-7328669-0' and the presence of deobfuscated JavaScript files. The attack pattern involves exploiting a PDF vulnerability to achieve code execution.

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.Dropper.Agent-7328669-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7328669-0
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` `bedd676af9bf2e3ca07f9e3a10d07bc561e9745801f30653ef176c0c1e7620a3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	336 bytes
`legacy_pdfkit_stage_000.js` `a3a26f04037f35c5eb1aa5c551a6e885b7df7c40d52d05ac76d5a50dec821449`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2EC	12347 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `7d6883c36b14355cf2967ed239459f9492a42299bfdb6859dc5b602271ceaf25`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2EC	5162 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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