Malicious PDF — malware analysis report

Static analysis result for SHA-256 131d2a75082c31fa…

MALICIOUS

PDF

188.3 KB Created: 2015-07-24 23:35:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e2946171c6dd1242866c986d7daed716 SHA-1: 45786134a0d9f136939c48483c4fab089ce845a7 SHA-256: 131d2a75082c31fa42b1b29f2d60ab0bf888843974ed83d0b3ae560e1e4cf826
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics as malicious, including a critical alert for a link to known malicious redirector infrastructure. The embedded URL points to 'botcraftman.ru', which is identified as a malicious domain. This suggests the document's primary purpose is to lure the user to this malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-8785660-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8785660-0
  • 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D1%85%D0%BE%D0%BA%D0%BA%D0%B5%D0%B9+2014+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187529_kazachi_pesni_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190889_fifa_2015_skachat_torrent_russkaya_versiya.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193196_soderzhanie_fayla_hosts_windows_7.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024b18.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B18 3556 bytes
font_01_sfnt_off0002589b.bin
3b53b3bb9c5a76710daead34f8fb50a9123efcf398a1e1fd34ac1d01199bde77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2589B 14772 bytes
font_02_sfnt_off000286df.bin
31e7e63915c798707f1a8a4f6e9fd5cced87d657acce80fa7c2ea62066950e0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x286DF 14532 bytes
font_03_sfnt_off0002b1cd.bin
491ded4e866c47ee4f098af0022d9699653bc4ab822f96f9b663b29e62d114c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1CD 7412 bytes
font_04_sfnt_off0002c799.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C799 6084 bytes
font_05_sfnt_off0002d72e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D72E 3752 bytes

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