PDF malware analysis — malicious · 429cc35d6011cee3

MALICIOUS

PDF

4.5 KB Authoring application: qaqb

MD5: ad01caecb0d879fbacf8ce19e4dc79cf SHA-1: 8004f49279a1e18ba4bc285d10a991a082481c46 SHA-256: 429cc35d6011cee3e14d2ba7465b0932d8dfb0538157681a0e941c236563b6c9

70 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains an embedded JavaScript payload, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. The ML classifier strongly flags this PDF as malicious. The embedded JavaScript file, 'stream_001_off000002b5.js', is the primary artifact likely responsible for malicious actions, such as downloading and executing further payloads.

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_off000002b5.js` `3ae40811ed2bdcb5195998d8bbd550b70dc923676dabe46ec0ce1778f6f2bd7d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2B5	23145 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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