PDF malware analysis — malicious · d15acd3f15f2efe7

MALICIOUS

PDF

5.3 KB Authoring application: sqab

MD5: c2e97febcccbb4a5e50a46035e5dbae5 SHA-1: 5c987820d141dcf1430b3c8417776c2afdf83a69 SHA-256: d15acd3f15f2efe78b7985fcb660218f57d4d40d54b6101bfdc8da968344726c

70 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file was flagged as malicious by an ML classifier with high confidence. It contains an embedded JavaScript file, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. The embedded JavaScript is likely responsible for delivering the malicious payload. The presence of an embedded file and script points towards an attack pattern aimed at exploiting the user or the system through the PDF document.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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: PDFSyntaxError. 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
`stream_001_off000002e5.js` `2581a9af4457de7c38af9f13aa4d1438da548facb833005bf998698046ab3274`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2E5	65494 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 long base64-like blob(s).

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