PDF malware analysis — malicious · bf1004aa1e8eca23

MALICIOUS

PDF

17.4 KB Created: 2009-08-16 11:13:29 Authoring application: DgE90G7 (via M8ckng)

MD5: 41ce11afb3df55f0c3a5550bd3ac1aa0 SHA-1: 1cd217fadbd96ea1046d53622897998d33633f91 SHA-256: bf1004aa1e8eca2388092dae173b7be91559c3f181b73f6f5a04b85800da6677

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ClamAV detection 'Js.Trojan.Obfus-48' strongly suggests malicious JavaScript is present. The JavaScript stream is obfuscated, and the eval() call is a common technique for executing such code. The primary intent appears to be downloading and executing a second-stage payload, as suggested by the 'Js.Trojan.Obfus-48' detection.

Heuristics 6

ClamAV: Js.Trojan.Obfus-48 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Js.Trojan.Obfus-48
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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` `a73b6a04220c3b07ba5d4f009a3123ab9052f3ec2e01c7d608b6bb4e770de049`	pdf-javascript-stream	PDF /JS object 7 at offset 0x245	16476 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 7 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.