PDF malware analysis — malicious · 9819bcd9564907b2

MALICIOUS

PDF

10.4 KB

MD5: 5766ba4473462485e15c4efdb243cb68 SHA-1: b3e461b788ce410c3069106119e72084730a5b70 SHA-256: 9819bcd9564907b221457cc62de5bc96d729d7a44c63d14a4c1684f269bc8e99

78 Risk Score

Malware Insights

MITRE ATT&CK

T1553.005 Mark-of-the-Web Bypass

The PDF file was detected as malicious by ClamAV due to obfuscated object names, a common technique to evade signature-based detection. It also contains an embedded file, which is a typical delivery mechanism for malware. The embedded file, named 'embedded_file_obj0001.bin', is likely the next stage of the attack. The XFA form heuristic suggests the document may be using advanced form features for obfuscation or exploitation.

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` `9a3fe29fe3f14be98b453aaa5bf1d7a46f8cfd78bb738fb6a70d11d426c8ad1f`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x84	13408 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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