Malicious PDF — malware analysis report

Static analysis result for SHA-256 b28075701ca985d7…

MALICIOUS

PDF

13.1 KB
MD5: 982776f9abe9a96a019f61d98a69e511 SHA-1: 9ab9014719a9033a5985002feb84379422760508 SHA-256: b28075701ca985d7c2f26902a4cce16c04166ec37cde2de096b4c11de8ab04d9
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.003 Phishing: Spearphishing Attachment T1204.002 Malicious File: User Execution

The file is a PDF document flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-36962'. The presence of embedded files and an XFA form suggests an attempt to exploit PDF viewer vulnerabilities. The ML classifier also strongly indicates maliciousness. The embedded URL, while seemingly benign, is associated with the XFA form, which can be abused for malicious purposes.

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.

FilenameKindSourceSize
embedded_file_obj0041.bin
c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb		 pdf-embedded-file PDF EmbeddedFile object 41 at offset 0x26E6 85 bytes
embedded_file_obj0042.bin
dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91		 pdf-embedded-file PDF EmbeddedFile object 42 at offset 0x2798 1029 bytes
embedded_file_obj0043.bin
9c58a0994eee827abd1bc8adae7b02a4c6236f9577fb5360a2838db447a23842		 pdf-embedded-file PDF EmbeddedFile object 43 at offset 0x29B1 1789 bytes
embedded_file_obj0044.bin
3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169		 pdf-embedded-file PDF EmbeddedFile object 44 at offset 0x2DC1 144 bytes
embedded_file_obj0045.bin
10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275		 pdf-embedded-file PDF EmbeddedFile object 45 at offset 0x2E6D 77 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.