Malicious PDF — malware analysis report

Static analysis result for SHA-256 236c3b8a951ce3c3…

MALICIOUS

PDF

185.7 KB Created: 2015-07-26 23:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: de4fdd8ac3611e04f948f909d7bc1ca7 SHA-1: 53f4c7e303e51e92e30482c18d2c5328930fabe9 SHA-256: 236c3b8a951ce3c359a7dda952ac0e40b665455775dec49fdd7d86ef22495100
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a malicious redirector link and a high ML score. ClamAV also detected it as Pdf.Dropper.Agent-7493781-0. The embedded URL points to botcraftman.ru, which is identified as known malicious infrastructure. This suggests the document is designed to lure users to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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-7493781-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493781-0
  • 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%B0%D0%BD+%D0%BC%D0%B8%D1%88%D0%B5%D0%BB%D1%8C+%D0%B6%D0%B0%D1%80+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187826_microsoft_visio_2007_skachat_besplatno_c_klyuchom_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192892_sgcrack_2014_klyuch_aktivacii.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197746_assassins_creed_revelations_klyuch_produkta.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241ea.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241EA 3556 bytes
font_01_sfnt_off00024f6d.bin
b9ef17d2b1ea24e4932cef5fa3871f5b67417ed730e407b89111ffc5e979f3cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F6D 15060 bytes
font_02_sfnt_off00027e07.bin
54d84fd70aa5e6ce3b1f52908f231959e935fad93ad347e02366b2a01a2c78f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E07 14760 bytes
font_03_sfnt_off0002a98b.bin
96d5169397e278845bbc6d7ea7dae19e307858472b6ad9d3bb878f5b9b6e5bee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A98B 6776 bytes
font_04_sfnt_off0002bcee.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCEE 6084 bytes
font_05_sfnt_off0002cc83.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC83 3752 bytes

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