Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8a1c2071d3ddadf…

MALICIOUS

PDF

187.8 KB Created: 2015-07-25 09:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e36f3ad6ec657ba87f8a93e872616b54 SHA-1: 51845f523253c3d6f2774165733ee328de0768c9 SHA-256: b8a1c2071d3ddadf63f4022a6366f8d716a1e64bd73277a8b869edbd5de3d821
92 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 strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirection. No scripts were extracted, but the presence of a malicious link suggests a phishing or malware distribution attempt.

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=fifa+2015+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%D0%B4%D0%BB%D1%8F+pc&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197438_skachat_kontroller_vebkameruy_logitech_dlya_skaypa.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184554_sims_3_polnaya_antologiya_19_v_1_skachat_torrent_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191438_zapolnennuyy_dnevnik_proizvodstvennoy_praktiki_avtomehanika.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024837.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24837 3556 bytes
font_01_sfnt_off000255ba.bin
1fb7a50e9c79977dbdc52ed1d7714a4922d35d6b8311687b9e1f1cf2b2847c7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255BA 14816 bytes
font_02_sfnt_off00028386.bin
a5b10925d00a5628f8face0cc9495c112bac6a2cedcbcde3ef143124625c81c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28386 14788 bytes
font_03_sfnt_off0002af3d.bin
521a7b8e0897b0b178409164bed5038424f1d902148f56111dfb8cda50678e6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF3D 7488 bytes
font_04_sfnt_off0002c552.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C552 6084 bytes
font_05_sfnt_off0002d4e7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4E7 3752 bytes

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