PDF malware analysis — malicious · adabbcb5581c36c3

MALICIOUS

PDF

8.9 KB Created: 2009-03-28 18:44:17 Authoring application: bpZRsNQkIVpYGuhwws (via fUuLAHJZqvyKgUH)

MD5: 42738fc5e6b48d88da85e6b12b00c20f SHA-1: 0bb00369ecc35502c81245fe9b1225c8ea48c145 SHA-256: adabbcb5581c36c371ad2d8799d81002757c048fbec920309b08774e010df278

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, as indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The ClamAV detection 'Pdf.Exploit.Agent-35572' strongly suggests a known PDF exploit. The embedded JavaScript, though obfuscated, is likely responsible for the malicious behavior, potentially downloading and executing a second-stage payload. The document body text does not provide specific lures but contains generic phrasing.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape 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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `7886096d5c1d1ab9e7daf99acd901df281c27a5c1caf895abb20d7e1253fab94`	pdf-javascript-stream	PDF /JS object 7 at offset 0x4DE	7092 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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