Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc70bb70e694dcfb…

MALICIOUS

PDF

185.3 KB Created: 2015-08-08 10:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: dd275071b5557b588568882b736255ad SHA-1: bb3f7ee9a32ee07ec04433312557d4ecd83bfc77 SHA-256: fc70bb70e694dcfbf58bc6e2bfac7da34a67202146b5438d2b4f4f3fa1eb88c8
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 assigned a high probability of maliciousness. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site for phishing or malware delivery. No scripts were extracted from this sample.

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%8B+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B2%D0%B5%D0%B4%D1%8C%D0%BC%D0%B0%D0%BA+2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384665_super_bonus_224215_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386179_dzhubgakrasnodar_raspisanie_avtobusov.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384675_skachat_kopatel_onlayn_cherez_torrent_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242ac.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242AC 3556 bytes
font_01_sfnt_off0002502f.bin
1c66767cf33ef8da087196e2be87536b8e66850e278b226910d1b3901277c24b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2502F 14320 bytes
font_02_sfnt_off00027d45.bin
1bdb34460530df544f3708516b9bff2a8899c1e4c5605cca86f0484fc167616c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D45 14468 bytes
font_03_sfnt_off0002a7f7.bin
c5e7ea02bca70f393d880916f1ef4bc5570373490d31d5f2dbf89dd82c2a97ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7F7 6792 bytes
font_04_sfnt_off0002bb91.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB91 6084 bytes
font_05_sfnt_off0002cb26.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB26 3752 bytes

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