Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b227a20a3c171e…

MALICIOUS

PDF

183.2 KB Created: 2015-07-24 01:11:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fa16097b29773527c1fb5763bb4d140c SHA-1: af22e506192bb4bc1bb8c204da1422345bd7f1b1 SHA-256: 27b227a20a3c171e5e27952135e17f6fc8e3c37a435ef4b1fd6f8ec1acc97774
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a link to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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-7493107-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493107-0
  • 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=%D1%82%D0%B5%D1%81%D1%82+%D0%B3%D0%B5%D1%80%D1%87%D0%B8%D0%BA%D0%BE%D0%B2%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184883_skachat_igru_euro_truck_simulator_2_s_modami_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184505_kak_postroit_besedku_svoimi_rukami_chertezhi_i_foto.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185635_carevich_nehiter_nemuder_russkaya_narodnaya_skazka_chitat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023b98.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B98 3556 bytes
font_01_sfnt_off0002491b.bin
4ed8c802da729f4ad127e06546b858060b34d11f7b7a06689075112528e01dd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2491B 14732 bytes
font_02_sfnt_off000276ba.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x276BA 14468 bytes
font_03_sfnt_off0002a16c.bin
6ef5460a9489b3adeff30e02ccb92c639a3fec2f798e4deab176838842e2c0bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A16C 6276 bytes
font_04_sfnt_off0002b313.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B313 6084 bytes
font_05_sfnt_off0002c2a8.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2A8 3752 bytes

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