PDF malware analysis — malicious · e2a75f1c75cfc203

MALICIOUS

PDF

80.9 KB

MD5: e8dbf78615cb5df9ca0c3c18a63186f5 SHA-1: 9dd8d143ba7f9f882ffa9036cb584153c8f80671 SHA-256: e2a75f1c75cfc203422dc4462f22200306eb91a36384c4af3e10d53f9eb7e19b

72 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by an ML classifier with high confidence. It contains an embedded script payload, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. This script is likely responsible for downloading and executing a secondary malicious file, as suggested by the 'ML_NYX_PDF_MALICIOUS' and 'EXTRACTED_FILE_STATIC_TRIAGE' heuristics. The embedded artifact 'embedded_file_obj0001.bin' is the likely payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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_obj0001.bin` `cbd31ccce271daa4bd5150e2213ec80b68b481e51470fcc6b5a28ee2541d44c0`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x51	13431 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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