Malicious PDF — malware analysis report

Static analysis result for SHA-256 8657533c014771b4…

MALICIOUS

PDF

185.9 KB Created: 2015-08-08 12:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c3fab092a6a33211d51af5ccd0ef9351 SHA-1: 52dd9c03b85eaf0259aefc8061239ef0753aae8b SHA-256: 8657533c014771b4609fc871502f9ab2e0efd3922b2a8f3f6a319af5c2a3a075
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. This suggests the document is designed to lure users to a malicious website, likely for phishing or malware delivery. No scripts were extracted, but the presence of a malicious redirector is a strong indicator 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%D1%85%D0%B5%D0%BC%D0%B0+%D0%BF%D1%80%D0%B5%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%BE%D0%B2%D0%B0%D1%82%D0%B5%D0%BB%D1%8F+12%D0%B2+%D0%B2+220%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189988_skachat_sborku_dlya_maynkraft_1710_s_modami.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4389/4389673_skachat_filmuy_besplatno_russkie_melodramuy_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387046_coreldraw_x6_torrent_portable.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_off00024303.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24303 3556 bytes
font_01_sfnt_off00025086.bin
4994e0a58cf23883ea6cdfd89be0bff149dcf4be4b9929bda300e0fb1f244b50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25086 15128 bytes
font_02_sfnt_off00027f3e.bin
1cb973383b44f2389f5098b952b4f2359cccbe88b9a13e510fea70bd613e057d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F3E 14532 bytes
font_03_sfnt_off0002aa2f.bin
a4372fb543cdf8b45dbb0ece0933e5d8bd7bd058769fa90c167a8830f039fba9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA2F 6812 bytes
font_04_sfnt_off0002bde8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDE8 6084 bytes
font_05_sfnt_off0002cd7d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD7D 3752 bytes

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