Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8a51d497a7ee9dc…

MALICIOUS

PDF

187.4 KB Created: 2015-07-24 19:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 12e1af385e3e009e831cdc98a6d0faf9 SHA-1: 2c147a4117b831640e89807d97bc93643ba61535 SHA-256: f8a51d497a7ee9dc4a70dbdbcf2fb0fbd5fec59134f2ca54070bd6ced35032f6
150 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier. It contains a critical heuristic firing for a PDF malicious redirector link pointing to 'http://botcraftman.ru/'. This indicates the document is likely a lure to redirect users to a malicious site, potentially for further exploitation or malware delivery.

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-8790595-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8790595-0
  • 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%A1%D0%B5%D1%80%D0%B3%D0%B5%D0%B5%D0%B2+%D1%81%D1%82%D0%B0%D0%BD%D0%B8%D1%81%D0%BB%D0%B0%D0%B2+%D1%81%D0%B5%D1%80%D0%B3%D0%B5%D0%B5%D0%B2%D0%B8%D1%87+%D1%81%D0%BE%D0%BB%D0%B4%D0%B0%D1%82%D1%8B+%D0%B0%D1%80%D0%BC%D0%B0%D0%B3%D0%B5%D0%B4%D0%B4%D0%BE%D0%BD%D0%B0+2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193300_skachat_sborku_mayn_kraft_1_5_2_s_modami_100.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187115_skachat_vindovs_8_cherez_torrent_64_bit_avtoustanovka.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187619_programma_dlya_ustanovki_igr_na_telefon.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024be2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BE2 3556 bytes
font_01_sfnt_off00025965.bin
5c47cfd15ba2a2e714990cfcb6ba4f1dc0848550a14bf2e1f0dd856d020d5be6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25965 14144 bytes
font_02_sfnt_off0002861e.bin
1bdb34460530df544f3708516b9bff2a8899c1e4c5605cca86f0484fc167616c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2861E 14468 bytes
font_03_sfnt_off0002b0d0.bin
be6730b99b18baeee08f77ea53f53008035a747006a08b45a6ef0da30ab1ea23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B0D0 6628 bytes
font_04_sfnt_off0002c3d8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3D8 6084 bytes
font_05_sfnt_off0002d36d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D36D 3752 bytes

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