Malicious PDF — malware analysis report

Static analysis result for SHA-256 8baff4aa0f8dc9fd…

MALICIOUS

PDF

186.1 KB Created: 2015-07-25 06:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2f0e37ef13a4675c5f096d327b723cd3 SHA-1: a0b0f02f85e90f27206c61c032ebf7cf52309752 SHA-256: 8baff4aa0f8dc9fd1ee9a12038e2ac14947ccc3d80b12d9ddd433c16256977c4
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirects. This suggests the PDF is designed to lure users to a harmful website.

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=cross+stitch+professional+platinum+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%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/5//4184/4184445_volhovnik_kniga_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189797_instrukciya_po_yekspluatacii_toyota_prius_30_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192833_makaruychev_yu_n_algebra_10_klass.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a775.bin
ed8146d0c9c38fd1534641a6ad3f436a4c75576d2a65c516c1d31e6823e31dc0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A775 7828 bytes
font_00_sfnt_off00024093.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24093 3556 bytes
font_01_sfnt_off00024e16.bin
634504809c8d295f0ab2512546db507a03563996187ad7762971804a057dde2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E16 14580 bytes
font_02_sfnt_off00027b66.bin
b154a8be64a4bfdd88b601c1c17567484e523ecef19bc38a3e6440e43f85dab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B66 15156 bytes
font_04_sfnt_off0002be86.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE86 6084 bytes
font_05_sfnt_off0002ce1b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE1B 3752 bytes

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