Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb7c05f7f940bf1…

MALICIOUS

PDF

247.7 KB Created: 2017-04-26 03:39:49 -07:00 Authoring application: RAD PDF (via RAD PDF 2.39.4.0 - http://www.radpdf.com)
MD5: 76d390c177de39b5a36f2a0e33e88e82 SHA-1: 8cedcbbe04d0c7243a1e6a9bb0c8efb246cd43f5 SHA-256: feb7c05f7f940bf107091dada5ffeec6b3d683157e61877243e169ce9cb4c894
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains embedded JavaScript and is flagged as malicious by ML classifiers and ClamAV (Pdf.Dropper.Agent-7329038-0). It also references external URLs, such as http://rgadmission.com/sam/img/img/index.php, which are likely used to download and execute a second-stage payload. The presence of CVE-2023-26369 related indicators suggests exploitation of a known vulnerability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8999

Heuristics 5

  • TrueType bitmap font + active content — CVE-2023-26369 related high CVE related PDF_CVE_2023_26369_RELATED
    PDF embeds a TrueType font with bitmap tables (EBDT/sbix/CBDT) alongside exploit delivery indicators — CVE-2023-26369 exploits the sfac_GetSbitBitmap function in Adobe's libCoolType for arbitrary code execution. This CVE was actively exploited in the wild, but this rule does not validate the malformed EBLC/EBDT primitive.
  • ClamAV: Pdf.Dropper.Agent-7329038-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7329038-0
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://����������������������.����/godrive/purchaseorder\(2\).php
    • http://almansurtravels.com/fft/adobe\(2\).php
    • http://rgadmission.com/sam/img/img/index.php
    • http://holidaycoasttours.com.au/css/js/web/new%20pdf/pdf.html
    • http://sonsuzumol.com/admin/oder%20pur/Newpdf/login.htm
    • http://hateau.ga/wp-content/site/payment/pvbt9ibsd66s0oldonxo3vug.php?rand=13InboxLightaspxn.1774256418&fid.4.1252899642&fid=1&fav.1&rand.13InboxLight.aspxn.1774256418&fid.1252899642&fid.1&fav.1&email=&.rand=13InboxLight.aspx?n=1774256418&fid=4#n=1252899642&fid=1&fav=1
    • http://berhfer.co/templates/order/adobe/index.php
    • http://www.radpdf.com)/Author(user)/Creator(RAD
    • http://www.dynaforms.com
    • http://www.radpdf.com
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014cb.bin
d43e7b69e1e25fe070d522da94c4396003aae12eb7a75aecb2cc0f5e5feef6a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CB 73728 bytes
font_01_sfnt_off000074b5.bin
1449adf0a7de3ebd12b535de46d71f93ced7d1f5d40183cf060d82c2cb7cc29f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B5 175408 bytes

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