Malicious PDF — malware analysis report

Static analysis result for SHA-256 9243a1957fd08f05…

MALICIOUS

PDF

185.9 KB Created: 2015-07-23 21:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bb08a4d36299954af0656ed660786836 SHA-1: 8d942db33505949ed8bbb0b8c4c370362e54e233 SHA-256: 9243a1957fd08f05fd17e17ddedd636de7068ea3fc73ef66e525fb88df89e21b
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. No scripts were extracted, and the document body was not parsable.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D0%B1%D0%B0%D1%80%D0%B1%D0%B8+%D0%BF%D0%BE%D0%BA%D0%B0%D0%B7+%D0%BC%D0%BE%D0%B4+2+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184362_instrukciya_po_ohrane_truda_dlya_vracha_kdl.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183252_proekt_doma_yelbrus.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184698_skachat_diablo_3_torrent_na_russkom_yazuyke.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245dc.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245DC 3556 bytes
font_01_sfnt_off0002535f.bin
24b2d2bb61e38774bb00a01f987e9a0e97b5ce33be9b4a2753381f76cb78cf4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2535F 13940 bytes
font_02_sfnt_off00027f2d.bin
1bdb34460530df544f3708516b9bff2a8899c1e4c5605cca86f0484fc167616c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F2D 14468 bytes
font_03_sfnt_off0002a9df.bin
b69bef59eda88d41b62a6bdc2c2503ad11f8f4b2cd04edf5666cf6d1286ff51f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9DF 6824 bytes
font_04_sfnt_off0002bda1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDA1 6084 bytes
font_05_sfnt_off0002cd36.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD36 3752 bytes

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