Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad93b2e84458f92…

MALICIOUS

PDF

185.8 KB Created: 2015-07-28 20:29:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 351dc48417b703dafcd5f2c0f12c43aa SHA-1: 5090770fb14c6519f9d8e4e0c2ef0a964ab3ec0e SHA-256: 5ad93b2e84458f92bb15be182fbe8ab7e70c650e018942eb1a4725ffa898181d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for linking to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, suggesting the document acts as a dropper or a lure. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to download and execute a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8787141-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8787141-0
  • 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%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D1%82%D1%80%D0%B5%D0%BD%D0%B8%D1%80%D0%BE%D0%B2%D0%BE%D0%BA+%D0%B4%D0%BB%D1%8F+%D1%83%D0%B2%D0%B5%D0%BB%D0%B8%D1%87%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B6%D0%B8%D0%BC%D0%B0+%D0%BB%D0%B5%D0%B6%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4234/4234997_delfin_diskografiya_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192245_skachat_skins_for_minecraft_pe.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186758_programmirovanie_mikrokontrollerov_dlya_nachinayuschih.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_off000244ae.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244AE 3556 bytes
font_01_sfnt_off00025231.bin
0f5819e3e42e7b376772816400a9dedb7ec8cf8c99ce72daf5547baadd92b177		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25231 14484 bytes
font_02_sfnt_off00027f3c.bin
c457fcfaab6f548331a7572fefd0d96ae260c7787e9dff2b51ae1aa36573dbb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F3C 14468 bytes
font_03_sfnt_off0002a9eb.bin
87d9d5f3febed0263c5dfdf6ed77cc6b270a8d98f4b2c9e1e88441efd22f9720		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9EB 6772 bytes
font_04_sfnt_off0002bd64.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD64 6084 bytes
font_05_sfnt_off0002ccf9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCF9 3752 bytes

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