Malicious PDF — malware analysis report

Static analysis result for SHA-256 e79bf293e7e093d0…

MALICIOUS

PDF

187.0 KB Created: 2015-07-24 09:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1841e0417f96d7a2e9eec4b165cac8f5 SHA-1: 626344ec0dcc628a3d5cffdb538bf65b21213e3c SHA-256: e79bf293e7e093d007695f3021728140d32b2876447dd8cd76f8e3dfd5174144
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of compromise, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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=1%D1%81+%D0%BF%D1%80%D0%B5%D0%B4%D0%BF%D1%80%D0%B8%D1%8F%D1%82%D0%B8%D0%B5+82+%D1%83%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%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+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189270_skachat_ks_1_6_russkaya_versiya.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190618_klyuch_dlya_igruy_dnevnik_kupca.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188632_skachat_futbolnuyy_menedzher_2007_cherez_torrent_na_russkom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000248c7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248C7 3556 bytes
font_01_sfnt_off0002564a.bin
f2601f49f058b404f2b76ba7c499981bf4897cf9eab1a1a36b545ae948657332		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2564A 14124 bytes
font_02_sfnt_off000282a7.bin
62fa95ca01284f592fa57706b7841d5af19ee60bb3545b3bb1f1638a65425420		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282A7 14468 bytes
font_03_sfnt_off0002ad5a.bin
e5b94bc9ca5bee5a0c9bb15eefc71bfd9a9caff888ce0f8bd5ddece88e1585d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD5A 7120 bytes
font_04_sfnt_off0002c226.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C226 6084 bytes
font_05_sfnt_off0002d1bb.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1BB 3752 bytes

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