PDF malware analysis — malicious · b738c21dcbbbbaea

MALICIOUS

PDF

10.4 KB

MD5: 55f3d59d20c7b6ce2cb4131a725cc577 SHA-1: 56b100aafa5a4cacc3d5e8317d1d9f3279873e40 SHA-256: b738c21dcbbbbaea056f1ba94a92a37913a3438122f857c751866ee23da9d60a

78 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file exhibits characteristics of malicious intent, including the presence of an embedded file and the use of XFA forms, which are often exploited for delivering malware. ClamAV detection of 'Heuristics.PDF.ObfuscatedNameObject' further supports this assessment. The embedded file, named 'embedded_file_obj0001.bin', is likely the second-stage payload. The document body content is heavily obfuscated and unreadable, preventing a more specific analysis of its lure.

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` `d410ab3f43465c57da0f4e7c53feaaa77c15f7f509ac7e2f6c2e6989de3b1f40`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x82	13408 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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