PDF malware analysis — malicious · 56872cd44f8a3737

MALICIOUS

PDF

17.2 KB Created: 2009-05-14 13:11:13 Authoring application: KbzUzGLhWEfLojrVEnC (via WAUqiFiMJtJvkxlf)

MD5: a4308080129261ede9d73f268b65c88f SHA-1: 90f39c46b01d75f3e9d280350bafafa599dd87ab SHA-256: 56872cd44f8a3737190c210797b2f86eb1f5327b645744540d4f47e7e764dc84

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, flagged by multiple heuristics including a critical ClamAV detection for 'Pdf.Exploit.Agent-35572'. The ML classifier also strongly indicated maliciousness. The embedded JavaScript, although obfuscated, likely serves to download and execute a secondary payload, a common technique for initial access or further infection. The document body text does not provide specific lures but contains generic phrases.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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` `f647257192be3fdb1ad050aa35d8fc0849263e94763970f0d56b4820e7d850a1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x4F9	15573 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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