Malicious PDF — malware analysis report

Static analysis result for SHA-256 b37134583b01ec3d…

MALICIOUS

PDF

187.2 KB Created: 2015-07-24 11:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c41fadfd4037b93fdc3a6bbfc7effd1a SHA-1: 86c5080971788dc8a37a0bbd647b1642343e1832 SHA-256: b37134583b01ec3d760a690969f158693b192c851d6d5e024108e2602c421a04
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%B0%D0%BB%D0%B5%D0%BD%D0%B4%D0%B0%D1%80%D1%8C+%D0%B1%D0%B5%D1%80%D0%B5%D0%BC%D0%B5%D0%BD%D0%BD%D0%BE%D1%81%D1%82%D0%B8+%D0%BF%D0%BE+%D0%BD%D0%B5%D0%B4%D0%B5%D0%BB%D1%8F%D0%BC+%D0%BD%D0%B0+%D1%80%D0%B0%D0%B1%D0%BE%D1%87%D0%B8%D0%B9+%D1%81%D1%82%D0%BE%D0%BB&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191145_blank_kvitancii_taksi_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184568_fayl_msvcp100dll_dlya_windows_7.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185042_subway_surfers_na_android_s_beskonechnuymi_dengami_i_klyuchami.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024924.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24924 3556 bytes
font_01_sfnt_off000256a7.bin
337598dba2231c7589e56aae046abe4bc5beb6a018a45072ab34b7381b1bcc76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x256A7 14732 bytes
font_02_sfnt_off00028456.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28456 14468 bytes
font_03_sfnt_off0002af08.bin
b14e18373565373cb11f623c9ce9cd8db5448f9a54bdfa920bcc30364112d306		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF08 6896 bytes
font_04_sfnt_off0002c2e7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2E7 6084 bytes
font_05_sfnt_off0002d27c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D27C 3752 bytes

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