Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b56683f12c0f359…

MALICIOUS

PDF

53.1 KB Created: 2023-05-03 10:42:14 +03:00 Authoring application: iTextSharp’ 5.5.10 ©2000-2016 iText Group NV (AGPL-version)
MD5: 6071a192ed425557223c4851fecf77b8 SHA-1: d266721d3eaacb0bb02c6ba2b5b9913c6f395d5f SHA-256: 9b56683f12c0f3591dc8575de1361df8a279b0c4f0e704d67391b935ec97633d
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF contains a direct link to a ZIP archive, identified by the PDF_DIRECT_PAYLOAD_LINK heuristic. This indicates an attempt to deliver a malicious payload to the user. The URL http://kaiessentials.com/gnome2/6451afa4a4181.zip is the primary indicator of compromise. No scripts were extracted, but the direct link strongly suggests a downloader or dropper functionality.

Machine Learning

  • Nyx PDF Classifier clean score 0.0788

Heuristics 2

  • PDF link points directly to executable/archive payload critical PDF_DIRECT_PAYLOAD_LINK
    PDF contains a clickable HTTP(S) URI whose path ends in an executable, script, shortcut, disk image, or archive extension. Documents can legitimately link to installers, so this is a high-risk delivery indicator rather than a standalone exploit fingerprint.
  • 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://kaiessentials.com/gnome2/6451afa4a4181.zip

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_cff_off000006f1.bin
321e7c1033e1f2d21a39e55764be64c5b600a25ef08997d0815b6c94fe4f25cf
pdf-font-stream PDF embedded font (cff) at offset 0x6F1 2587 bytes
font_01_cff_off00002c1b.bin
edb617c123f49533789229e253b0ed4b762c942ee8b361ae2a51c5de64c039f5
pdf-font-stream PDF embedded font (cff) at offset 0x2C1B 539 bytes
font_02_cff_off0000494a.bin
ad94c8d0782a8d4ff4712e2208c4cd4a24e4055c5ba482e5ef060cdc240d7d50
pdf-font-stream PDF embedded font (cff) at offset 0x494A 3497 bytes
font_03_cff_off00007204.bin
7aba96ca5b702ebea26fcfaab297fed56fcab65245720eb40758c8ee684af466
pdf-font-stream PDF embedded font (cff) at offset 0x7204 633 bytes