Malicious PDF — malware analysis report

Static analysis result for SHA-256 dad218993c796424…

MALICIOUS

PDF

351.7 KB Created: 2015-08-20 07:24:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f594763e7b8447021b7222e6465e5902 SHA-1: 6f4a0e317b37783523bfdedf8a60d805280543d3 SHA-256: dad218993c796424305c1fe0156a555e8b6541efa1224df78744e0ccb7e568f6
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirects. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of a malicious link is sufficient to indicate a likely phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 2

  • 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.
  • 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%BA%D0%B0%D1%80%D1%82%D0%B8%D0%BD%D1%8B+%D0%BF%D0%BE+%D0%BD%D0%BE%D0%BC%D0%B5%D1%80%D0%B0%D0%BC+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D1%85%D0%B5%D0%BC%D1%8B&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638919_skachat_tom_i_dzherri_vse_serii_podryad_besplatno_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638796_programma_klinok_dlya_lecheniya_kosoglaziya_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638929_skachat_programmu_mods_for_minecraft_pe_na_android.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053b23.bin
269be821673453b64e97638adf6ed988fd4ac36107c66dc3846eb41ba32aff06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B23 7604 bytes
font_01_sfnt_off00055113.bin
efe0ddb625b592495a6d4577e67d9522df4008767e556293f0dce5d3bea5a72b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55113 15240 bytes

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