PDF malware analysis — malicious · f2bc6780d4755e7e

MALICIOUS

PDF

15.0 KB Created: 2009-06-04 07:53:45 Authoring application: qkCzyIAqNhIkcuYb (via cxOAAKjPmvHRinpe)

MD5: 6906a50ccce951154e77ab00663c6d11 SHA-1: 005c52a2b23319019830e9d36de660b5239b6959 SHA-256: f2bc6780d4755e7ec9792cbbae7857a08e1f0439b7ef39c532ba916146a58759

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was detected as malicious by ClamAV with the signature Pdf.Dropper.Agent-5341883-0. Static analysis revealed embedded JavaScript, including the use of String.fromCharCode, indicating obfuscation techniques common in malicious documents. The presence of a JavaScript action and an embedded JS stream suggests the script is intended to execute malicious code, likely to download and run a second-stage payload.

Heuristics 5

ClamAV: Pdf.Dropper.Agent-5341883-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-5341883-0
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.
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` `4a65bf83eafd15ba827b2a3c8459ba686ceb6a798e259047c31234493ed274dc`	pdf-javascript-stream	PDF /JS object 7 at offset 0x3C7	13660 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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