PDF malware analysis — malicious · ad375bd9532e026a

MALICIOUS

PDF

7.4 KB Created: 2012-08-04 17:40:47

MD5: e1de610f7333b1a0fd454fceb0f3c256 SHA-1: baa3272bac18b740551e266c0fd21f5190c37b1f SHA-256: ad375bd9532e026a08487ee2ed48a43dc8a3783417f0a90cfdf496cc8d9b323a

70 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File

The PDF contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. The ML classifier strongly flags this PDF as malicious. The embedded file, 'embedded_file_obj0011.bin', is likely the second-stage payload. The document body contains seemingly random text, suggesting it is not intended for direct user interaction but rather to obscure the malicious payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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
`embedded_file_obj0011.bin` `c13cec89ffc14087c53adc60b18c0e90e69e12c47b2d258b3923040284516927`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0xB97	6910 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 long base64-like blob(s).

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