PDF malware analysis — malicious · 7ea20d519b3c5b1e

MALICIOUS

PDF

13.0 KB

MD5: 978346aa14f246830015b925a9000b46 SHA-1: 5f62fa8c83c3d0ad4e69db09d4bfd7a68d5655eb SHA-256: 7ea20d519b3c5b1e9ddcab5a16ae42c04036eaef7f111f2b02e1a738e8e591ad

114 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1566 Phishing T1566.002 Spearphishing Attachment T1059 Command and Scripting Interpreter T1059.001 PowerShell

The critical ClamAV detection and high ML classifier score strongly indicate malicious intent. The PDF contains embedded files and an XFA form with an action trigger, suggesting an exploit is present. The embedded URL, while seemingly benign, is associated with the exploit mechanism. The overall pattern points to a PDF-based exploit designed to download and execute a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36962 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36962
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
AcroForm button with action trigger low PDF_ACROFORM_BUTTON

PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://www.xfa.org/schema/xfa-locale-set/2.1/

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0041.bin` `c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb`	pdf-embedded-file	PDF EmbeddedFile object 41 at offset 0x26BC	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0x276E	1029 bytes
`embedded_file_obj0043.bin` `9c58a0994eee827abd1bc8adae7b02a4c6236f9577fb5360a2838db447a23842`	pdf-embedded-file	PDF EmbeddedFile object 43 at offset 0x2987	1789 bytes
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x2D97	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x2E43	77 bytes

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