Malicious PDF — malware analysis report

Static analysis result for SHA-256 71357be0b7fe17f8…

MALICIOUS

PDF

186.0 KB Created: 2015-07-28 15:36:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ab62b19c4903fbc65b5f7c711289e173 SHA-1: 821ae30047e7f8fe664345d1753e301fb5bff810 SHA-256: 71357be0b7fe17f812d08cd64fe3c0f89d180257cb7ad49d5b6032f3b532b001
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. The embedded URL suggests an attempt to lure the user 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 0.9980

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=%D0%BF%D0%B3%D1%83%D0%BC%D0%BE%D1%81%D1%80%D1%83+%D1%8D%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D0%BD%D0%BD%D1%8B%D0%B9+%D0%B4%D0%BD%D0%B5%D0%B2%D0%BD%D0%B8%D0%BA+%D0%B2%D1%85%D0%BE%D0%B4+%D0%B2+%D0%BB%D0%B8%D1%87%D0%BD%D1%8B%D0%B9+%D0%BA%D0%B0%D0%B1%D0%B8%D0%BD%D0%B5%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4216/4216020_maynkraft_147_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195735_skachat_makros_na_mini_uzi_varfeys.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4220/4220824_volmar_katalog_2013_skachat.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_off00024389.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24389 3556 bytes
font_01_sfnt_off0002510c.bin
eb61fd626462f62bf55eae6b190d3820379c3a0fcfa2d82fa4f4276c60cb82ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2510C 14420 bytes
font_02_sfnt_off00027e8c.bin
657c8efa15e32d89a02a08c7e9ffc6b8cb47e1532ab0c86503e039d116e4c074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E8C 14532 bytes
font_03_sfnt_off0002a97f.bin
7c4a669709231818110300017975c13c88b940c7a8ceff9785df84444a905cf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A97F 7088 bytes
font_04_sfnt_off0002be25.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE25 6084 bytes
font_05_sfnt_off0002cdba.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDBA 3752 bytes

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