Malicious PDF — malware analysis report

Static analysis result for SHA-256 62cfc2661c04dcb9…

MALICIOUS

PDF

186.2 KB Created: 2015-08-08 11:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2ad9410ffd42377a0af5d3992d0ac89c SHA-1: 5e2231eeeba99fc5897c7611ae0c44d8c2461625 SHA-256: 62cfc2661c04dcb92cfd8ab8a0ac21163c5e2f6eff4ba2b25546f0499d7016db
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and contains a link to known malicious redirector infrastructure. The embedded link, http://botcraftman.ru/..., is likely intended to lead the user to a malicious site, potentially for phishing or malware distribution. 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%D0%B8%D0%BC%D1%83%D0%BB%D1%8F%D1%82%D0%BE%D1%80+%D1%82%D0%B0%D0%BD%D0%BA%D0%B0+%D1%82-34+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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/6//4386/4386706_vlc_portable_rus_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384761_patch_dlya_pes_2013_russkie_kommentatoruy_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385592_vokalnaya_muzuyka_5_klass_konspekt_uroka.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_off000244c0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244C0 3556 bytes
font_01_sfnt_off00025243.bin
5c59bf5afc34de2237a3fbefb69541fb556bfe57c433a8f475e4d3bb6781ac54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25243 15044 bytes
font_02_sfnt_off000280b2.bin
09b6f47fa8b6ba8fdfed66703091050b0d3e9ddd9d5d917a041080cb136c87ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280B2 14468 bytes
font_03_sfnt_off0002ab61.bin
7bbfe9668af3f31646a0f439b81d13903265876656e0ad47765ab775eaf7f0ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB61 6792 bytes
font_04_sfnt_off0002bf1b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF1B 6084 bytes
font_05_sfnt_off0002ceb0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEB0 3752 bytes

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