Malicious PDF — malware analysis report

Static analysis result for SHA-256 23de4a64ee773394…

MALICIOUS

PDF

185.1 KB Created: 2015-07-24 05:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c39793b37dd087e6d576e19a2beec3a0 SHA-1: eaf36ad430587ace7889c20081b6839ea61fdf87 SHA-256: 23de4a64ee773394888de7a8136a9b3cfffa153b8f85f29e8d2c50a748486bad
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, botcraftman.ru. This indicates the document is designed to lure users to a malicious site, likely for phishing or to download further malware. The ML classifier also strongly flagged this PDF as malicious.

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+gran+turismo+5+pc+%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://img0.liveinternet.ru/images/attach/c/5//4188/4188452_bethoven_tishina_notuy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184492_skachat_maynkraft_095_na_android_422_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187747_rabochaya_programma_po_russkomu_yazuyku_5_9_klass_laduyzhenskaya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a4fe.bin
f48b38663a93ca33a5b1d6965a2d492645d15b69d562c2b160d80a7d60b17445		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A4FE 7456 bytes
font_00_sfnt_off00023e47.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E47 3556 bytes
font_01_sfnt_off00024bca.bin
ea45828aa53c600f72ef966d443933af539f9206c65c4a2155bc2ed3fa7c3f22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BCA 14584 bytes
font_02_sfnt_off000278f7.bin
0724427de7256d72e2b7748bd3804ceca6e00e269f9f358e81fcad0339dae589		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278F7 14920 bytes
font_04_sfnt_off0002bac6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAC6 6084 bytes
font_05_sfnt_off0002ca5b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA5B 3752 bytes

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