Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c652040d95c3289…

MALICIOUS

PDF

184.3 KB Created: 2015-08-09 12:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fcdca1b717e7c0bd7efc50e46c1e5c6e SHA-1: 0a42181b27c84d0eeb356e7d9b195b14d157bbd2 SHA-256: 7c652040d95c3289230b443bbfd5202f02da40f83a419f292b32c45a367b9f12
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, http://botcraftman.ru/?lip&keyword=%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D1%8B%D0%B9+%D0%B1%D0%BE%D1%82+%D0%B4%D0%BB%D1%8F+%D0%BE%D0%BB%D0%B0%D0%B9%D0%BA&charset=utf-8, is the primary indicator of compromise. No scripts were extracted, limiting further analysis of the delivery mechanism.

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%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D1%8B%D0%B9+%D0%B1%D0%BE%D1%82+%D0%B4%D0%BB%D1%8F+%D0%BE%D0%BB%D0%B0%D0%B9%D0%BA&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4395/4395049_molodaya_mat_sovraschaet_molodogo_suyna.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4392/4392424_kartinki_dlya_lichnogo_dnevnika_raspechatat_cherno_beluye.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4392/4392223_skachat_igru_stalker_bozhya_kara.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023fcb.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FCB 3556 bytes
font_01_sfnt_off00024d4e.bin
53e9125ac6092b1ce7dfc4f8a83ddbd33046961b76661475e79850197f15e9e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D4E 14260 bytes
font_02_sfnt_off00027a0a.bin
163142455a5560a1f6759d0ead96de5f50a47653c77b96353ea21901cf90e8c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A0A 14468 bytes
font_03_sfnt_off0002a4be.bin
9bb33bfee3098f782f628089ac22d33813a4f697f0df0b0bac19b1b93ac955a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4BE 6600 bytes
font_04_sfnt_off0002b780.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B780 6084 bytes
font_05_sfnt_off0002c715.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C715 3752 bytes

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