Malicious PDF — malware analysis report

Static analysis result for SHA-256 8443a6f635c6462c…

MALICIOUS

PDF

185.6 KB Created: 2015-08-08 13:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: eec7015f080875bda8ebbd24c1341949 SHA-1: 3a91a103c5d9eebe4144a186c0ccc52e817eed6f SHA-256: 8443a6f635c6462c197c9a74f3edbdaf671956769df5e04fd764420942efee73
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 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 URL 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%D0%B3%D0%B0+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D1%8B+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%B8%D0%B9+%D1%8F%D0%B7%D1%8B%D0%BA+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4391/4391824_skachat_metodichku_bormental.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4391/4391326_vstavay_s_pervuymi_luchami_vstavay_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4236/4236423_avtomagnitola_sony_drive_s_instrukciya.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_off0002437f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2437F 3556 bytes
font_01_sfnt_off00025102.bin
a24d58b3bd0ea0fe3aba7a6add379280034b8af60430e892a0e687ee6cb327dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25102 14396 bytes
font_02_sfnt_off00027e31.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E31 14468 bytes
font_03_sfnt_off0002a8e4.bin
f67b25f74cdff0beb3c8f2a857727c977a1c72ccb082044bc81265b069044d44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8E4 6868 bytes
font_04_sfnt_off0002bc99.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC99 6084 bytes
font_05_sfnt_off0002cc2e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC2E 3752 bytes

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