Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36e15f28ad288d4…

MALICIOUS

PDF

13.2 KB
MD5: 3d25764a703f0b4bd62f066c53e63af9 SHA-1: 77f780547bd1568401de269b9dbb9f5f965573d1 SHA-256: f36e15f28ad288d4d4cef2e85188dcaa00cb3ee45c293917df0a056dc87a64f5
84 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File

The PDF file contains embedded objects and an XFA form, which are common vectors for exploiting PDF vulnerabilities. The ClamAV detection 'Pdf.Exploit.Agent-36962' strongly suggests an exploit is present. The embedded URL, while seemingly benign, could be part of the exploit chain or a lure. The presence of multiple embedded files indicates a potential multi-stage attack where these files are dropped and executed.

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.

FilenameKindSourceSize
embedded_file_obj0041.bin
c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb		 pdf-embedded-file PDF EmbeddedFile object 41 at offset 0x2A02 85 bytes
embedded_file_obj0042.bin
dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91		 pdf-embedded-file PDF EmbeddedFile object 42 at offset 0x2AB4 1029 bytes
embedded_file_obj0043.bin
9e7a581f438026ff0c2968b5c1ca0b543bb2863e217fb44d41759e1ce0c23b55		 pdf-embedded-file PDF EmbeddedFile object 43 at offset 0x2CCD 2011 bytes
embedded_file_obj0044.bin
3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169		 pdf-embedded-file PDF EmbeddedFile object 44 at offset 0x316D 144 bytes
embedded_file_obj0045.bin
10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275		 pdf-embedded-file PDF EmbeddedFile object 45 at offset 0x3219 77 bytes

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