Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda9c0b357708ee8…

MALICIOUS

PDF

186.6 KB Created: 2015-07-25 02:19:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a655c8dad628a45c12e66944feb929ab SHA-1: 506d671531e425c50aeaa0d0fb205779380addcf SHA-256: cda9c0b357708ee8ccd2c2dc1fddc0e935f5582691a2d5ce67aa262539341307
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 strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious redirects. No scripts were extracted, and the document body was not parsable text, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+doc+%D1%81%D1%82%D0%B8%D0%B2%D0%B5%D0%BD+%D0%BA%D0%BE%D0%B2%D0%B8+%D0%B3%D0%BB%D0%B0%D0%B2%D0%BD%D0%BE%D0%B5+%D0%B2%D0%BD%D0%B8%D0%BC%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B3%D0%BB%D0%B0%D0%B2%D0%BD%D1%8B%D0%BC+%D0%B2%D0%B5%D1%89%D0%B0%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190535_otvetuy_na_biletuy_po_neyrofiziologii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184629_klyuch_produkta_dlya_windows_7_professionalnaya.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193337_kira_i_sekret_bublika_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024719.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24719 3556 bytes
font_01_sfnt_off0002549c.bin
b2f5e668d9d4ac2d5d93b041fce32e1bef3b1dac0a66e4d5bad9740f00781e1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2549C 14276 bytes
font_02_sfnt_off000281be.bin
932eac3a0e78490fc67219016b9ea64197714870e1fce8c757bfd52f614b1fab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281BE 14468 bytes
font_03_sfnt_off0002ac6a.bin
b0016fea38f4a3693054d2d034198c5de6d6f1a37135f50e25cee835a13d048a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC6A 6944 bytes
font_04_sfnt_off0002c071.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C071 6084 bytes
font_05_sfnt_off0002d006.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D006 3752 bytes

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