Malicious PDF — malware analysis report

Static analysis result for SHA-256 37360b123ed93f25…

MALICIOUS

PDF

375.0 KB Created: 2015-08-20 07:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 10adf6f75d2ab51c6e8cf13d311a0f16 SHA-1: 61ff9ebf27c4446d44f912ce7aa924eb5b4153cb SHA-256: 37360b123ed93f257bc19e5afa605423ece5d4938b8442ffa1b109c99f485963
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL points to 'botcraftman.ru', which is identified as malicious. This suggests the document is designed to lure users to a harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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=%D1%82%D0%B5%D1%81%D1%82%D1%8B+%D0%BF%D0%BE+%D0%B1%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D0%B8+%D0%B5%D0%B3%D1%8D+2015&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638793_rezultatuy_egye_po_russkomu_yazuyku_2015_god.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638801_simulyator_bmp_2_igra.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4638/4638807_xinput1_3dll_dlya_windows_7_skachat_besplatno_cherez_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059485.bin
2c4e23b10e4d7731117ba0b2d3b355d2d60344808ee556609ea7c2061760a156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59485 8076 bytes
font_01_sfnt_off0005ac27.bin
72de9f478cc4f63305cfe7973bc2615daaffdf59cb0fae998cfe35c72b7630e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC27 15488 bytes

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