Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1bd4dc77d219ad…

MALICIOUS

PDF

186.7 KB Created: 2015-07-24 05:12:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 6acd297b9f89e20323fa928257bb8e70 SHA-1: b506cbef586da39e7ee0e8569fcdd52a2a37bec4 SHA-256: 0f1bd4dc77d219ade47182393b01dacf6bc5f90f7d242cda43acaf3592e71b88
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of a 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0+%D0%B4%D0%BB%D1%8F+%D0%BF%D1%80%D0%B8%D0%BD%D1%82%D0%B5%D1%80%D0%B0+hp+laserjet+1020&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187675_foto_goluyh_mam_s_suynom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188063_skachat_muzuyku_sektor_gaza_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185266_chartova_dyuzhina_skachat_torrent.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_off0002a92a.bin
81bc436335a206364fa19d593a3b063102d2dc8300a806adae9635d9c37aeb93		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A92A 8016 bytes
font_00_sfnt_off000243af.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243AF 3556 bytes
font_01_sfnt_off00025132.bin
9a5ea5f4249bb5f0075b1ac57e42340db52b05fef35de734aae2fc989f929ef5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25132 14284 bytes
font_02_sfnt_off00027d9c.bin
a61a25754d66ede3bb6e017713ff70aa42d1f1db2b9f7bf69a27f3ae4ea3e240		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D9C 14772 bytes
font_04_sfnt_off0002c0f3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0F3 6084 bytes
font_05_sfnt_off0002d088.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D088 3752 bytes

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