Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7cda0d1b971ac9…

MALICIOUS

PDF

24.1 KB Authoring application: 52-164-161-159-117-154-147-164-117-161-150-151-90-145-123-105-144-145-123-106-91-109-175-164-151-166-167-164-160-82-145-123-103-175-152-167-160-149-166-155-161-160-82-145-123-107-90-145-123-104-91-173 (via 1-154-119-162-107-152-161-116-125-97-97-97-97-97-169-115-115-115-115-116-115-115-115-115-115-115-115-115-115-115-115-115-131-115-115-115-115-115-115-115-115-139-170-117-115-133-155-115-153-139-115-97-)
MD5: 90cdb3cd8df8c9430d993f01efb9cf1b SHA-1: 7fee2639559e2ed9398e9177645659fb2700b477 SHA-256: 7d7cda0d1b971ac964040980d35377ecbf15675d0486154327f332c00c2fbf13
124 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PDF document flagged by ClamAV as Pdf.Exploit.Agent-36962, indicating it exploits a known vulnerability. ML classification strongly supports maliciousness. The presence of embedded files and scripts, along with an AcroForm button action, suggests the document is designed to trigger an exploit that likely downloads and executes a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.2/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://www.xfa.org/schema/xfa-locale-set/2.1/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0041.bin
c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb		 pdf-embedded-file PDF EmbeddedFile object 41 at offset 0x3976 85 bytes
embedded_file_obj0042.bin
b40a217a8d9b8d3671cc3874c550d30941b93ca6dde99995d43921dede579865		 pdf-embedded-file PDF EmbeddedFile object 42 at offset 0x3A28 1183 bytes
embedded_file_obj0043.bin
8d7b9e9e6b294998e43f3e1ec3d3bc8a85e2d342f6df091631d8088d1f033f06		 pdf-embedded-file PDF EmbeddedFile object 43 at offset 0x3C7A 9120 bytes
embedded_file_obj0044.bin
3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169		 pdf-embedded-file PDF EmbeddedFile object 44 at offset 0x43E5 144 bytes
embedded_file_obj0045.bin
ce4a3f07835c725838e55947d6b1f21771e0ad8084ee86d0890ecc12bd5231fd		 pdf-embedded-file PDF EmbeddedFile object 45 at offset 0x44A7 2427 bytes
font_00_cff_off00004877.bin
062eede2d0cc5d3972869dc7e2f2f9f01d1d1b3756b715c8252f06948ce99ae2		 pdf-font-stream PDF embedded font (cff) at offset 0x4877 1192 bytes

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