PDF malware analysis — malicious · 31823139f58f9e62

MALICIOUS

PDF

34.6 KB Created: 2010-02-27 14:26:52 Authoring application: silJLHkcIZRpzrI (via sGmAoWQXZYsPDmrgQSoiJWD)

MD5: 89f57da537215f5e81bd6007f7d1f2e8 SHA-1: 0ee272768209d619ecac71f68c83559cc0c196e1 SHA-256: 31823139f58f9e6237622da6a8adf890d8949b61a6def93f94231165593ec5e4

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. The JavaScript stream, identified as javascript_obj0019_000.js, is heavily obfuscated and uses eval() calls, suggesting malicious intent. The primary function appears to be downloading and executing a second-stage payload from a remote source, as evidenced by the obfuscated script and the 'Suspicious extracted artifact' heuristic firing. The document body is unreadable, but the script's behavior points to a downloader or droppper.

Heuristics 5

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_obj0019_000.js` `ef4b551e7067e1447be4f0b5153b9564932a7ec74bc3383bff58939cef8381b2`	pdf-javascript-stream	PDF /JS object 19 at offset 0x45CB	16489 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 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.