PDF malware analysis — malicious · 8d111e0fae70bed5

MALICIOUS

PDF

5.2 KB Created: 2012-06-11 17:19:01 Authoring application: agYa

MD5: 9b74df6adb65e6b883518cad88a7b770 SHA-1: 1e32e15f8a61ed9b5dd482a0c93650a6364645b3 SHA-256: 8d111e0fae70bed5a5bdbfabf9bdda99a1ae575104d769deb4c95d0e9826bb17

70 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. Static analysis identified an embedded script payload within a PDF stream, which is a common technique for delivering exploits or secondary payloads. The embedded artifact 'stream_001_off0000031a.js' is likely the malicious script. The PDF structure also indicates the presence of XFA forms and an embedded file, further supporting a malicious intent.

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_off0000031a.js` `64642edbf194b90a6a449174aed5c6b11c97342f82262d8e8127e6c0365329ea`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x31A	61536 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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