Malicious PDF — malware analysis report

Static analysis result for SHA-256 82cfcc9122ae4090…

MALICIOUS

PDF

185.4 KB Created: 2015-07-23 21:02:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3b22c21e6ca9bf516d0f5ab6cb8b4998 SHA-1: 96cc70c1da5e802db7967e6820ac48c28693160e SHA-256: 82cfcc9122ae4090ebd4a1bb0efa14ab2b6ba61acb1b56dacbbf84405d6867b6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing indicating it redirects to a known malicious URL. The ML classifier also flagged the document with high confidence. The embedded URL is likely intended to lure the user to a site for phishing or to download a secondary payload.

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%B8%D0%B3%D1%80%D1%83+game+of+war+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184781_baza_dannuyh_mts_2013_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184633_kitami_masao_samuray_bez_mecha_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184383_biletuy_na_pogruzchik.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_off00023f1a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F1A 3556 bytes
font_01_sfnt_off00024c9d.bin
f77215722090001c78d57568d623087143f066930a4ad91cf7c44306fa7a2b77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C9D 15104 bytes
font_02_sfnt_off00027b87.bin
846eb61dceddf4aba70646e81c866f18aa7b955379c71505b6ba1ec32cecb1ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B87 14800 bytes
font_03_sfnt_off0002a742.bin
a7f27839d53977c70aa026b5382aa6813a735cb702c3c9b9ce9b16560f08e4e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A742 7100 bytes
font_04_sfnt_off0002bbf1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBF1 6084 bytes
font_05_sfnt_off0002cb86.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB86 3752 bytes

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