PDF malware analysis — malicious · f2c6c2632264877b

MALICIOUS

PDF

11.0 KB Created: 2010-07-20 18:35:39 +04:00 Authoring application: n_NHnXR (via bda9f)

MD5: 909bfb5911da2bcbca532ffe95661299 SHA-1: 289c70125fb5a0eb9f0e4e2bc5acd94c92431884 SHA-256: f2c6c2632264877bbcfcdeca083f931de1071713810ca9072c68df3c033ad8ea

74 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The eval() call within the JavaScript stream suggests code execution, and the presence of obfuscated JavaScript files points towards an attempt to download and execute a secondary payload. The document's metadata indicates it was authored by 'n_NHnXR (via bda9f)', which is not a strong indicator of a specific family. No specific URLs or hashes were extracted.

Heuristics 6

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. (matched inside decoded stream)
Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT

Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
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_obj0011_000.js` `c604b7a527282e74d03298435a5d5e3ced9b1b13e684f6ffa626e67d1ba99647`	pdf-javascript-stream	PDF /JS object 11 at offset 0x2482	509 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0013_001.js` `bcba5e4f4026cf2279324908a65bb249ef15e48842db1a8f6f43f01a549eab64`	pdf-javascript-stream	PDF /JS object 13 at offset 0x25E9	193 bytes
`javascript_obj0015_002.js` `8d98e22f1f055bb0f3c717ab5a3136820286d3491399b687e6311745b73b9c11`	pdf-javascript-stream	PDF /JS object 15 at offset 0x26EA	46 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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