PDF malware analysis — malicious · 37136707b4b9fddc

MALICIOUS

PDF

10.5 KB

MD5: 03c5b0e2e401b37e9f9d157b0ab024d7 SHA-1: dd340da3ac4c7968b593e606f59e44c64a77f13e SHA-256: 37136707b4b9fddc6046ae07cf84b75d7d458cfa1581b41ac01d81b53d94bd77

108 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The sample is a PDF file flagged by multiple heuristics, including ClamAV's Heuristics.PDF.ObfuscatedNameObject and a machine learning classifier, indicating malicious intent. It contains an embedded file, likely the primary payload. The obfuscated nature and embedded artifact suggest a delivery mechanism for a secondary stage.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

Heuristics 4

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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
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` `af61b31cc871cb0ea6f3ee57c3c2e4100776bd200e56022314c5f8b95145178e`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x7E	13408 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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