PDF malware analysis — malicious · aece880b6b7b5911

MALICIOUS

PDF

66.5 KB Created: 2009-05-14 12:06:05 Authoring application: aMRd8Bm0CSYT (via cFYKdZJ2IIH)

MD5: 7774d1a6a9e0fcca78ff55b752982c65 SHA-1: 0d049aa50fc93cb22989d07db62a9fcb26e55018 SHA-256: aece880b6b7b591121edb71f4dbe6f4d2c6b945d87b746d52241a48ff794ed45

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 uses String.fromCharCode and an eval() call, suggesting obfuscation and dynamic code execution. The primary heuristic firing is PDF_EVAL, which is a strong indicator of malicious intent. The extracted artifact javascript_obj0007_000.js is also flagged as suspicious. The script likely attempts to download and execute a second-stage payload.

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` `c50c27ec016ddebc5027d45e48a056830afdba5929aa2783b12a97c8bcfd640a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23C	66864 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.