Malicious PDF — malware analysis report

Static analysis result for SHA-256 138b0d3f7d8e8f78…

MALICIOUS

PDF

186.5 KB Created: 2015-07-24 03:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c68ccd3c4f6db30d2b035523abd3a71e SHA-1: 6d6a56bfb366cd43c8f9a4433c2ea437821b21c7 SHA-256: 138b0d3f7d8e8f784dc06597b7eaef8935f5f638ce3daf897bd162121ac7383c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector URL, botcraftman.ru. This heuristic firing, combined with the ML classifier's high confidence, strongly suggests the document is designed to lure users to a malicious site. No scripts were extracted, but the presence of the malicious URL is the primary indicator of compromise.

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%B0%D0%B2%D1%82%D0%BE%D0%BA%D0%B0%D0%B4+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%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://img1.liveinternet.ru/images/attach/c/5//4185/4185592_skachat_igru_metal_gear_solid_3_cherez_torrent_na_pc.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184966_nero_photosnap_viewer_skachat_besplatno_na_russkom.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185686_treyner_dlya_geroi_mecha_i_magii_5_versiya_160.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024589.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24589 3556 bytes
font_01_sfnt_off0002530c.bin
087e7b0836762537b7fc641eb1cdb5e03cba998726d759dfc08b84376b06918a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2530C 15228 bytes
font_02_sfnt_off000281e6.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x281E6 14468 bytes
font_03_sfnt_off0002ac98.bin
e8e9c87df11dc404e3f8a16b7f65a7dbc679a353216c9a1d352a53dede04fed9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC98 6824 bytes
font_04_sfnt_off0002c055.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C055 6084 bytes
font_05_sfnt_off0002cfea.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFEA 3752 bytes

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