Malicious PDF — malware analysis report

Static analysis result for SHA-256 636f3df392b36622…

MALICIOUS

PDF

186.5 KB Created: 2015-07-24 05:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: af837e08003c087e1203aa42dc550045 SHA-1: 0ee4cd1f2198605f556d1c2bc04a55555c2878fe SHA-256: 636f3df392b36622dce4c286b8200e9bd7f945ccec0aefa679fff8ad3e36f0c0
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is likely used to lure users into downloading malware or engaging in phishing activities. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of 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%B8%D0%B3%D1%80%D1%8B+%D0%BF%D1%80%D0%BE+%D0%B7%D0%BE%D0%BC%D0%B1%D0%B8+%D0%B2%D1%8B%D0%B6%D0%B8%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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//4187/4187116_oomph_diskografiya_19922012_skachat_torrent_mp3.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187976_torrent_superpamyat_metoduy_zapominaniya_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187039_sketchup_pro_2015_na_russkom.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024653.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24653 3556 bytes
font_01_sfnt_off000253d6.bin
4ae2555daf1f71f923ea9de0c731563cbca503e7d042175adb7fe8ffea11ebae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x253D6 14636 bytes
font_02_sfnt_off00028112.bin
c457fcfaab6f548331a7572fefd0d96ae260c7787e9dff2b51ae1aa36573dbb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28112 14468 bytes
font_03_sfnt_off0002abc1.bin
8a7e103e05a0e8daf4733b933fe8dc9aef166b5bbcc931458ac8b885a163ef21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABC1 7016 bytes
font_04_sfnt_off0002c005.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C005 6084 bytes
font_05_sfnt_off0002cf9a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF9A 3752 bytes

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