PDF malware analysis — malicious · f34ff55a2241e36d

MALICIOUS

PDF

12.9 KB

MD5: df171f62abe3f6efb23d85e2c95353f4 SHA-1: 83f73601f058c71c988138d0903816f3b65e6732 SHA-256: f34ff55a2241e36dac3bfc3fdb0672ad3f34e2b3e574401cc70d02fba863b51a

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability. This JavaScript is designed to download and execute further stages, as indicated by the presence of multiple deobfuscated JavaScript files. The ClamAV detection name 'Pdf.Dropper.Agent-9449016-0' further supports its role as a dropper.

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-9449016-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-9449016-0
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` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `c43665a8fe7ccef054fec334ded89b8fb6539bee455179b9215d4ce479d0c338`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12710 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `6665f1bebec13d21dc3996ec670e77c91e8a0802350455de0d0b2d55e6f10c6f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5298 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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