PDF malware analysis — malicious · e429d56aa80d6619

MALICIOUS

PDF

15.8 KB Created: 2010-03-11 21:19:04 Authoring application: qT9PXxtnySI (via woyQ2)

MD5: a87462fbd4071ef031e29c367b40cb4e SHA-1: d070c0d54ead8e25f8e68beeef0a419b7c7ac135 SHA-256: e429d56aa80d6619d143b1f8024b5ecf855f63ba535766cb0c908da5f48f11a1

66 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 JavaScript stream, named javascript_obj0007_000.js, is heavily obfuscated using String.fromCharCode and eval(), making its exact function difficult to determine. However, the presence of these obfuscation techniques and the high heuristic scores suggest it is designed to download and execute a secondary payload. The file is classified as malicious with a high unknown exploit score.

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_obj0007_000.js` `f2c4c0652fdfdd019677d0436ff82eed6bfbd3f50875655ed43f8aba9c68845d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x243	14973 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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