Malicious PDF — malware analysis report

Static analysis result for SHA-256 607b75c739ade445…

MALICIOUS

PDF

350.2 KB Created: 2015-08-20 07:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: efcd64f02ca54919c809879261d77af7 SHA-1: d5e238c093a910f3d6d47b4faa474f2c43c13f46 SHA-256: 607b75c739ade44540410f5a5fcde658b7ad500dcf45f19611c481e72a688e00
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by multiple heuristics, including a critical finding that it links to known malicious redirector infrastructure. The embedded URL is likely part of a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and the malicious link suggest it's designed to redirect users to a harmful site, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Dropper.Agent-8787364-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8787364-0
  • 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://botcraftman.ru/?lip&keyword=%D0%B6%D0%B8%D0%B2%D1%8B%D0%B5+%D0%BE%D0%B1%D0%BE%D0%B8+%D0%B4%D0%BB%D1%8F+android+%D1%81%D0%BF%D0%B0%D1%80%D1%82%D0%B0%D0%BA+%D0%BC%D0%BE%D1%81%D0%BA%D0%B2%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638798_skachat_besplatno_film_kaligula_polnaya_versiya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638793_rezultatuy_egye_po_russkomu_yazuyku_2015_god.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052fb3.bin
bd20fd548bf1b331bd9f7c3498af5c2d2041acd69012ba7eba21b4ba074f23bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52FB3 9692 bytes
font_01_sfnt_off00054b5a.bin
fa9cad015e396ef5faadf2c8bd7327259795e1d3ac15b65e3527d137162726b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54B5A 14600 bytes

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