Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b48b7c62ebaf2a4…

MALICIOUS

PDF

186.0 KB Created: 2015-07-26 10:26:11 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a0a5be2782c99cfb0aca366534b27015 SHA-1: b8f2e15256494a2e4eaa1d0c67343c21e1059fda SHA-256: 0b48b7c62ebaf2a4fd177f7fecf41ad99a38fd3051804c6f83dcf9d91de0ae77
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 ML classifier also strongly flagged this PDF as malicious. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a dropper for further malicious content. No scripts were extracted, but the PDF structure itself facilitates the malicious 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-7627877-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7627877-0
  • 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%B4%D0%B8%D0%BA%D0%B8%D0%B9+%D0%B0%D0%BD%D0%B3%D0%B5%D0%BB+%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0+%D0%BF%D0%BE+%D1%81%D0%B5%D1%80%D0%B8%D0%B0%D0%BB%D1%83+%D1%87%D0%B8%D1%82%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187492_zakon_o_policii_glava_5_audio_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4210/4210465_programma_dlya_fitnes_kluba.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191629_foxconn_n15235_manual.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_off000244d9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244D9 3556 bytes
font_01_sfnt_off0002525c.bin
5d680ee6dff52b7624ce928371f5f26a32d242acda96950916b48904087f73ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2525C 14872 bytes
font_02_sfnt_off000280e1.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280E1 14468 bytes
font_03_sfnt_off0002ab93.bin
5419b28f00485bf3dd9a870e9bfc63257798d6fb28c6b5ed543c7990ec8036a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB93 6512 bytes
font_04_sfnt_off0002be16.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE16 6084 bytes
font_05_sfnt_off0002cdab.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDAB 3752 bytes

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