Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a712d7251640c70…

MALICIOUS

PDF

186.4 KB Created: 2015-07-25 05:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a7f7561b2d312d6bd04f4b555475fe7e SHA-1: 8f687f5ec02e817f7702fc735b3f29273e716ec7 SHA-256: 7a712d7251640c7053fb3cb09fb7dc77159960a507c66442a6cd45986971f349
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftcraftman.ru/..., is the primary indicator of malicious intent. No scripts were extracted, but the presence of a malicious link suggests the document is designed to lure the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • 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.
  • 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%B0%D1%80%D1%82%D0%B0+%D0%B0%D0%B1%D1%85%D0%B0%D0%B7%D0%B8%D0%B8+%D0%B4%D0%BB%D1%8F+%D0%BD%D0%B0%D0%B2%D0%B8%D1%82%D0%B5%D0%BB+75+nm7+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192839_prototip_igra_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196593_louna_skachat_vse_albomuy_besplatno_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_off000242a4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242A4 3556 bytes
font_01_sfnt_off00025027.bin
630f16d9c836004cee27ffaabb5605b0e4952080afd6294ae1c030e5cd45dab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25027 14772 bytes
font_02_sfnt_off00027e37.bin
763b6d69893f60dde9774a5d34a275a9c4fa5e30100b58a644a89e19add71845		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E37 14920 bytes
font_03_sfnt_off0002aa53.bin
55213797141ce15a1b8d90935745c66d4310db17672d6efa10ba45b81c7dc5b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA53 7312 bytes
font_04_sfnt_off0002bfb5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFB5 6084 bytes
font_05_sfnt_off0002cf4a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF4A 3752 bytes

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