PDF malware analysis — malicious · 5357f9b7c99fe0bc

MALICIOUS

PDF

14.2 KB

MD5: 3a2854c12b2c5a286c40a52b8f9c085f SHA-1: 3a4c0f220a1514607c716679940d86f9b5ea76fb SHA-256: 5357f9b7c99fe0bcb140d012f3300265f90e3bdc895e210ad38853f44454e3ff

114 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The critical ClamAV detection of 'Pdf.Exploit.Agent-36962' and the ML classifier's high confidence strongly indicate a malicious PDF exploit. The presence of multiple embedded files, including one flagged as an XFA form and another with an action trigger, further supports this. The embedded URL, while seemingly benign, is associated with the document's structure and may be part of the exploit chain.

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 0x2B6C	85 bytes
`embedded_file_obj0042.bin` `dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91`	pdf-embedded-file	PDF EmbeddedFile object 42 at offset 0x2C1E	1029 bytes
`embedded_file_obj0043.bin` `faa63921e590ea6bc90ca48253be80b8e3600b93abfeb0f6b1a36c7ef4849973`	pdf-embedded-file	PDF EmbeddedFile object 43 at offset 0x2E37	1796 bytes
`embedded_file_obj0044.bin` `3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169`	pdf-embedded-file	PDF EmbeddedFile object 44 at offset 0x3282	144 bytes
`embedded_file_obj0045.bin` `10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275`	pdf-embedded-file	PDF EmbeddedFile object 45 at offset 0x332E	77 bytes

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