Malicious PDF — malware analysis report

Static analysis result for SHA-256 5255f2527e091686…

MALICIOUS

PDF

185.1 KB Created: 2015-08-08 11:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 924d0af7994273d469dbba16abb93566 SHA-1: dc53706b151e0120d6ecd5e3e71179e4b5f4fe7a SHA-256: 5255f2527e0916864c59847f2f366237c431cd0ea5938641832d6acfe531cbdc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'http://botcraftman.ru/'. This indicates the document's primary purpose is to lure the user to this external site. ClamAV also detected the file as 'Pdf.Dropper.Agent-7525672-0', further confirming its malicious nature. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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-7525672-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7525672-0
  • 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%BA%D0%B0%D0%BA+%D0%BD%D0%B0%D0%BF%D0%B8%D1%81%D0%B0%D1%82%D1%8C+%D0%BE%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D0%BA%D0%BB%D0%B0%D0%BD%D0%B0+%D0%B2+%D0%B2%D0%B0%D1%80%D1%84%D0%B5%D0%B9%D1%81&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387176_skachat_stalker_ten_chernobuylya_10004_torrent_licenziya.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383729_kak_nayti_cheloveka_v_kishineve.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388337_nfp_2013_tablica_ballov.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242ba.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281
pdf-font-stream PDF embedded font (sfnt) at offset 0x242BA 3556 bytes
font_01_sfnt_off0002503d.bin
ab0ba1bcf2d916696e5e814995d33be3afc5a9567af41691b8bc7a9e539aaf94
pdf-font-stream PDF embedded font (sfnt) at offset 0x2503D 14224 bytes
font_02_sfnt_off00027cc3.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x27CC3 14468 bytes
font_03_sfnt_off0002a776.bin
a93eb2af08892c2138710fa8f013852121f6662fe14d460ef42804b6037c9ee3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A776 6712 bytes
font_04_sfnt_off0002ba8f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA8F 6084 bytes
font_05_sfnt_off0002ca24.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e
pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA24 3752 bytes