Malicious PDF — malware analysis report

Static analysis result for SHA-256 835b9e4b16b941ef…

MALICIOUS

PDF

185.4 KB Created: 2015-07-25 09:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f98ee8a57ddbd16c1fc0c9f06e5c20e1 SHA-1: b511b4f66361a09a2fee7de725606fbebbcee3cd SHA-256: 835b9e4b16b941efa7a7e937a167f5a1f0aad38376e657589f406618b521381b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link identified as a malicious redirector. This link, http://botcraftman.ru/..., is designed to lead the user to a potentially harmful destination. The ML classifier also flagged this PDF with high confidence, indicating 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=%D0%90%D1%81%D0%B5%D0%BB%D1%8C+%D0%A1%D0%B0%D0%B3%D0%B0%D1%82%D0%BE%D0%B2%D0%B0+%D0%A4%D0%BE%D1%82%D0%BE+%D0%96%D0%B0%D0%BB%D0%B0%D0%BD%D0%B0%D1%88&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192778_skachat_video_ded_bom_bom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192076_minimalnuyy_porog_egye_po_russkomu_yazuyku_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191782_eralash_skachat_besplatno_i_bez_registracii.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_off00024203.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24203 3556 bytes
font_01_sfnt_off00024f86.bin
132f401d70d601680c99f2c7e7199b28f36011b008fa28130e83bcffd33e7e3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F86 14636 bytes
font_02_sfnt_off00027d2d.bin
633f4847c2b37e1a9189445be74061eaa18e6cc7dd4bb70c557e44333c6ff9c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D2D 14760 bytes
font_03_sfnt_off0002a8af.bin
a586081c93856373969ebdb6cb997fe2e1235e601c2453fbaa5a611ac0ec6889		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8AF 6636 bytes
font_04_sfnt_off0002bbac.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBAC 6084 bytes
font_05_sfnt_off0002cb41.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB41 3752 bytes

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