Malicious PDF — malware analysis report

Static analysis result for SHA-256 715f5b94b35ed255…

MALICIOUS

PDF

186.4 KB Created: 2015-07-24 12:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f34e680903ba295efa77a3565c19bbf5 SHA-1: 36cdc7a65d0f3517a8570704a10366d2631f5cf4 SHA-256: 715f5b94b35ed25506babcdd9fbd66342628dfbe0db2009f4b72bd951b12c77d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/...` is flagged as malicious and likely serves as a lure to a phishing site or to download a second-stage payload. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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-8740445-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8740445-0
  • 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%BA%D0%BE%D0%B3%D0%B4%D0%B0+%D0%BF%D1%80%D0%B8%D0%B4%D1%83%D1%82+%D1%80%D0%B5%D0%B7%D1%83%D0%BB%D1%8C%D1%82%D0%B0%D1%82%D1%8B+%D0%B3%D0%B8%D0%B0+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+2015&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189135_chilkatzip2dll_nalogoplatelschik.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191733_lovushka_dlya_nevestuy_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191115_skachat_igru_god_of_war_3_na_pc_cherez_torrent.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_off000243eb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243EB 3556 bytes
font_01_sfnt_off0002516e.bin
5844a961db415454c8233ac6fe6182ad9bb85683f3772199df0d00c622ff9b4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2516E 14992 bytes
font_02_sfnt_off0002801b.bin
0d510f439a73eae665af138ecef4372c9b1dc55d02d5656a9604ccfb30fc5e3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2801B 14640 bytes
font_03_sfnt_off0002ab4e.bin
77b9011eb27e5e97f998f6aadad1d2ee6180556135ea87b9eb81b37593ed05d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB4E 7024 bytes
font_04_sfnt_off0002bfb7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFB7 6084 bytes
font_05_sfnt_off0002cf4c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF4C 3752 bytes

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