Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4a083abd2452c4…

MALICIOUS

PDF

186.0 KB Created: 2015-07-26 03:08:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f1f0cd4a5d5462e4c691283a91763176 SHA-1: 4db250466f759a0bd11ac2d31a4963e1361b4c0d SHA-256: 1f4a083abd2452c4217bafe650dd90feb52008d784c77ce6ab00b94231b7ab9b
90 Risk Score

Malware Insights

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

The PDF contains an embedded link that redirects to a known malicious domain, indicating a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious redirector 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%B6%D1%83%D1%80%D0%BD%D0%B0%D0%BB+%D1%80%D0%B0%D0%B4%D0%B8%D0%BE+7+2015+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • 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//4185/4185655_warcraft_3_frozen_throne_skachat_po_pryamoy_ssuylke.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200867_stalker_zov_pripyati_skachat_torrent_repack_mehaniki.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024228.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24228 3556 bytes
font_01_sfnt_off00024fab.bin
85d9edbcb51bb31303a65727ec1fecd84a463e96496f2f399e4b12462def96aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FAB 14960 bytes
font_02_sfnt_off00027dd6.bin
836be0ab62dc842dcd7f9d20449db27619eb0f89bd461aa4ddea7d5b2479eb86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DD6 14924 bytes
font_03_sfnt_off0002a9f2.bin
e1e1c7f6772145db06ff48ff86d5c68e41d838bee1efc0a08cbeb3bfdf61d1f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9F2 6980 bytes
font_04_sfnt_off0002be51.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE51 6084 bytes
font_05_sfnt_off0002cde6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDE6 3752 bytes

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