Malicious PDF — malware analysis report

Static analysis result for SHA-256 904d819f35165992…

MALICIOUS

PDF

186.0 KB Created: 2015-07-24 15:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: eb4e4da819a2b7d78df101f09ecef94a SHA-1: b1260bbf6be4d971887454bc1171cbe502e64791 SHA-256: 904d819f351659920743e961e1f9ebdcbc0fd8437cbed2e7725be77d4e237ee9
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 embedded URL points to botcraftman.ru, which is associated with malicious redirects. No scripts were extracted from this sample, and the document body was truncated and unreadable, limiting further analysis of the specific lure.

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=gta+5+online+%D0%B8%D0%B3%D1%80%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D0%B7+%D1%81%D0%BC%D1%81+%D0%B8+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192114_skachat_maynkraft_s_modom_divayn_rpg_i_taumkraft_3.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191368_setevoy_kontroller_drayver_dlya_windows_7_skachat_besplatno_hp.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191091_bonus_kod_dlya_world_of_tanks_0810.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024111.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24111 3556 bytes
font_01_sfnt_off00024e94.bin
5b97de07b933d9e0f0e36b8da3ffd9b15697619c4481926b05f56d7f6fadee76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E94 15188 bytes
font_02_sfnt_off00027d75.bin
6a01ad9406eb49bb2a6fafc67bfca595b0cdabf7be9b0668a084fe26c6d7b927		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D75 14904 bytes
font_03_sfnt_off0002a983.bin
7ca3c539a91202eb86569c8f31002c7113569d339b01a3104fb66c07668abe92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A983 7124 bytes
font_04_sfnt_off0002be46.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE46 6084 bytes
font_05_sfnt_off0002cddb.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDDB 3752 bytes

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