Malicious PDF — malware analysis report

Static analysis result for SHA-256 09651a8440cd91be…

MALICIOUS

PDF

186.7 KB Created: 2015-07-25 03:58:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 5f82a935ef69a84b0b17fd2c1ecadc09 SHA-1: 1c4a1c3724442835c26fa991b662004c48913edd SHA-256: 09651a8440cd91bebc680af326adbfe88bd5252a305c31a5efade1d6f91d7ad0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by multiple heuristics as malicious, including a critical alert for a link to a known malicious redirector. The ML classifier also assigned a high probability of maliciousness. The embedded URL `http://botcraftman.ru/` is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7782264-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7782264-0
  • 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+castle+crashers+v14+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197563_spin_tires_2013_skachat_torrent_s_modami.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191103_gta_san_andreas_russkaya_ozvuchka_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185199_kak_v_gta_5_popast_v_severnuyy_yankton_v_odinochnoy_igre.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ab8d.bin
6260306b45599b363997bc69ef292ae44378c39feaa5f78ed269946466a98cb0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AB8D 7224 bytes
font_00_sfnt_off000244fd.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244FD 3556 bytes
font_01_sfnt_off00025280.bin
faea06d83896a302f4f706d059067152aa503836a541be937bae48dafddee35d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25280 14828 bytes
font_02_sfnt_off00028029.bin
1ec1531b2870ddf600fa20afdf36c2df13fa57d99adb37d8ec8fc4f1a8f32d86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28029 14728 bytes
font_04_sfnt_off0002c0cf.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0CF 6084 bytes
font_05_sfnt_off0002d064.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D064 3752 bytes

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