Malicious PDF — malware analysis report

Static analysis result for SHA-256 135866bc7676e6e0…

MALICIOUS

PDF

186.1 KB Created: 2015-07-24 13:33:26 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1bb44fa060bc9f5dd9435a873852583c SHA-1: c17d8d61922b407854ae90bed227d2473ce230dc SHA-256: 135866bc7676e6e0ad214eeb35a24c32e7be0f217d71e801398c51c31bcc144a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a malicious site. While no scripts were directly extracted, the presence of a malicious URL strongly suggests a phishing or redirection attack. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BB%D0%B0%D1%83%D0%BD%D1%87%D0%B5%D1%80+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+%D1%81+%D0%BC%D0%BE%D0%B4%D0%BE%D0%BC+%D0%B8%D0%BD%D0%B4%D1%83%D1%81%D1%82%D1%80%D0%B8%D0%B0%D0%BB+%D0%BA%D1%80%D0%B0%D1%84%D1%82+2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192312_diktantuy_dlya_3_klassa_shkola_rossii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184880_bog_bogov_mahadev_vse_serii_s_russkoy_ozvuchkoy_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185445_razdacha_interneta_s_noutbuka_po_wifi_windows_7.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_off000244b0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244B0 3556 bytes
font_01_sfnt_off00025233.bin
77f08396c60f477b041feec27ab567c9049e95ccd1ddcdd20752d9b0f209fb70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25233 14480 bytes
font_02_sfnt_off00027ff5.bin
1bdb34460530df544f3708516b9bff2a8899c1e4c5605cca86f0484fc167616c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FF5 14468 bytes
font_03_sfnt_off0002aaa7.bin
8116bce35c2ac48fd0a5abb2f144d441b48c8e897722b4ca83483de825550b44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAA7 6876 bytes
font_04_sfnt_off0002bea1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEA1 6084 bytes
font_05_sfnt_off0002ce36.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE36 3752 bytes

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