Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d6a5893ae5aca2…

MALICIOUS

PDF

186.1 KB Created: 2015-07-23 20:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1309e1178fab2b2f5b7dd82896beffb4 SHA-1: b47425bc898f82f091b37c5c509cb47c6a239a2a SHA-256: 50d6a5893ae5aca22f8fafb0503c22d7050c46e312c1f812dd6f2e71a10b834d
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to this malicious site. 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 0.9982

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%BF%D0%BF%D1%80+%D0%BD%D0%B0+%D1%8D%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D0%BC%D0%BE%D0%BD%D1%82%D0%B0%D0%B6%D0%BD%D1%8B%D0%B5+%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D1%8B+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184420_soni_vegas_pro_11_skachat_besplatno_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184287_shpargalki_po_algebre_egye_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184456_gdz_po_obschestvoznaniyu_6_klass_bogolyubova_ivanova.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024582.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24582 3556 bytes
font_01_sfnt_off00025305.bin
c8d504248dbc7b401f7352059b87748466792776ee4aac8d6636159ec4e22896		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25305 14256 bytes
font_02_sfnt_off00028007.bin
9054b44c4c76ef9a334f1711f06a23ed739665e10d4cae44ed7e3c4fcbc7726e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28007 14468 bytes
font_03_sfnt_off0002aab8.bin
8621e43129ca34ef93bdb481605e5b149e2fecef0dbec3fb4802ee02b08730dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAB8 6880 bytes
font_04_sfnt_off0002be8a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE8A 6084 bytes
font_05_sfnt_off0002ce1f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE1F 3752 bytes

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