Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a330596e21b827…

MALICIOUS

PDF

187.0 KB Created: 2015-07-25 06:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e16933248ff3595682a0fb2f5777dab6 SHA-1: c500589bddfbb428b87250b4ec4b5572d4038100 SHA-256: c6a330596e21b827838dcd1cd660562e7000ed1d88b5e380f590db27e43a67fe
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high ML score. The embedded URL points to 'botcraftman.ru', which is identified as a known malicious redirector. This suggests the document's primary purpose is to lure the user into clicking the link, leading to a potential download of a second-stage payload. No scripts were extracted, but the presence of a malicious URL and the ClamAV detection strongly indicate a dropper functionality.

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-8789434-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8789434-0
  • 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=html+%D1%81%D0%BA%D1%80%D0%B8%D0%BF%D1%82%D1%8B+%D0%B8+%D1%81%D1%82%D0%B8%D0%BB%D0%B8+%D0%B2%D0%B0%D0%B4%D0%B8%D0%BC+%D0%B4%D1%83%D0%BD%D0%B0%D0%B5%D0%B2+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199526_skachat_igru_fifa_world_cup_brazil_2014_cherez_torrent_pc.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192304_skachat_kryak_dlya_portal_2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199292_video_maynkraft_kak_sdelat_mehanicheskiy_dom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245bf.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245BF 3556 bytes
font_01_sfnt_off00025342.bin
e6478979b270d86553858aad35614e890554cd7e6d1163d8c6cdbd7d8ce70aeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25342 14912 bytes
font_02_sfnt_off00028160.bin
fc1ad207cc779635326fcc44b5971b4d3e33be959f92e92358ca7ac3995ade34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28160 14800 bytes
font_03_sfnt_off0002acf9.bin
ce55c57788fbe00a369e4028c92d724a6d8b7ab19bc1238879bf858bd206ab9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ACF9 7184 bytes
font_04_sfnt_off0002c205.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C205 6084 bytes
font_05_sfnt_off0002d19a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D19A 3752 bytes

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