Malicious PDF — malware analysis report

Static analysis result for SHA-256 e93fc92eed1ab46d…

MALICIOUS

PDF

185.2 KB Created: 2015-07-24 13:53:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f0b2290d36af471af18ca9c9945ca2a7 SHA-1: eb6c65d018ecb50537207840d202b15cbc05fdb9 SHA-256: e93fc92eed1ab46db663a585cb98edc6fe57789bae45254da3a810352f700195
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 containing a link to a 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 redirector activity. No scripts were extracted, but the presence of the malicious link is sufficient evidence of malicious intent.

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%B2+%D1%83%D0%B4%D0%B0%D1%80%D0%B5+3+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+1+%D1%81%D0%B5%D1%80%D0%B8%D1%8F+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188707_komplekt_trenazherov_prostuye_trenazheruy_svoimi_rukami_130_mb.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191684_muzuyka_dlya_sporta_i_trenirovok_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192572_skachat_besplatno_windows_8_dlya_noutbuka_64_bit_s_torrenta.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024092.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24092 3556 bytes
font_01_sfnt_off00024e15.bin
ccad0794e79b36b747f855d64352c2f8d6b4b2129d17bb1e40b15faad2a598e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E15 14996 bytes
font_02_sfnt_off00027cdc.bin
75fe057abf5999143edf371fb729ca3746a1eb77fed8784c873c1ea7f827d37c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CDC 14680 bytes
font_03_sfnt_off0002a7a2.bin
cec079d33d7cb43145b4cd2215e141dcafceb65e86d093e2b05eb7874b466739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7A2 6700 bytes
font_04_sfnt_off0002bae9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAE9 6084 bytes
font_05_sfnt_off0002ca7e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA7E 3752 bytes

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