Malicious PDF — malware analysis report

Static analysis result for SHA-256 23b7073dbfc6a5c6…

MALICIOUS

PDF

182.9 KB Created: 2015-07-23 23:42:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a48cd10af885d6ff706d9bc50bb294e2 SHA-1: e48df10c9434cd59cc2516e278962cd20ab2dca0 SHA-256: 23b7073dbfc6a5c6603982cde692c99affde709d1801da3fa29b75d93db415a1
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure at botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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%B3%D1%82%D0%B0+5+%D0%BE%D0%B4%D0%B5%D0%B6%D0%B4%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185521_tachku_na_prokachku_vse_sezonuy_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185360_skachat_igru_blokada_3d_fps_online.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185398_chto_delat_esli_lagaet_gta_4.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000239e7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x239E7 3556 bytes
font_01_sfnt_off0002476a.bin
421345bec083195accbd14a8c1f7d0bdd6282b5430bd2263e6e669c4d5f43fd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2476A 14788 bytes
font_02_sfnt_off000275f9.bin
a73d7a74cd7c697c7568e134a4d8426e5a98df6b4c3094cef6a8341fbacc338e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x275F9 14640 bytes
font_03_sfnt_off0002a129.bin
99e8de6bf865583317a9da9e5484abd0c16c9e792c93132057a384f133102141		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A129 5948 bytes
font_04_sfnt_off0002b1a9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1A9 6084 bytes
font_05_sfnt_off0002c13e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C13E 3752 bytes

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