PDF malware analysis — malicious · 27e30bfaa8a46e3b

MALICIOUS

PDF

17.9 KB

MD5: e7abf1e753640c042a21adebf1398164 SHA-1: baab27261379de1b892078a287a9689521419d49 SHA-256: 27e30bfaa8a46e3baf0bafff02289733d68fef44029afce0dd396ef2c7beea76

222 Risk Score

Malware Insights

MITRE ATT&CK

T1555 Credentials from Password Stores T1059 Command and Scripting Interpreter T1204 User Execution T1027 Obfuscated Files or Information T1190 Exploit Public-Facing Application

This PDF file was detected as malicious by multiple heuristics, including critical alerts for an embedded PE payload. ClamAV identified the embedded executable as Win.Worm.Strationpac-2. The primary attack pattern involves delivering a secondary executable payload disguised within the PDF document.

Machine Learning

Nyx PDF Classifier malicious score 0.8617

Heuristics 5

Embedded Windows executable payload in PDF stream critical PDF_EMBEDDED_PE_PAYLOAD

PDF stream bytes contain an embedded Windows executable with a verified PE header. Exploit chains often hide droppers inside ordinary streams rather than standard /EmbeddedFile attachments.
ClamAV: Win.Worm.Strationpac-2 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Worm.Strationpac-2
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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
`root_forensics_malware_20070117_postcard_2.postcard.exe` `c3c0262197ede364f89762e919b3e47512db84525874aeda02f6a31061f664be`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x3D2	18640 bytes
Detection ClamAV: Win.Worm.Strationpac-2 Obfuscation or payload: likely Carved artifact entropy is 7.68, consistent with packed or encrypted content.

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