Malicious PDF — malware analysis report

Static analysis result for SHA-256 286b3c2d8fda989e…

MALICIOUS

PDF

188.0 KB Created: 2015-07-25 03:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d13c250e35064ad87f2ab10c10b0a071 SHA-1: aac943b2de8c2690ccdff303de8b453078bd56d4 SHA-256: 286b3c2d8fda989e3831877d24bd689f8b9e04490bfa2173e4456625c252d059
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. ClamAV also detected it as Pdf.Dropper.Agent-8786181-0, indicating it's designed to drop further malicious content. The ML classifier strongly supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-8786181-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8786181-0
  • 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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B2+%D1%85%D0%BE%D1%80%D0%BE%D1%88%D0%B5%D0%BC+%D0%BA%D0%B0%D1%87%D0%B5%D1%81%D1%82%D0%B2%D0%B5+%D0%BB%D1%8E%D1%81%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191862_skachat_sborku_maynkraft_1_7_4_s_modami.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191081_pes_6_phoenix_patch_20122013_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185095_svinka_peppa_skachat_besplatno_na_russkom_yazuyke.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024afc.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24AFC 3556 bytes
font_01_sfnt_off0002587f.bin
63614ee7735d760d3b41789fa493f1ed6dc03f8afab8ac7d6721760689c51808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2587F 14992 bytes
font_02_sfnt_off0002861a.bin
af528a6f60a1e9e6c910a9a9ec77cbebee5996f2ca9a5612773c44c51d14c874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2861A 14588 bytes
font_03_sfnt_off0002b12c.bin
bd69bd1e915d3e9c0801f203bd43b3ecde8dfa546927912538ac8d85f4414171		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B12C 7268 bytes
font_04_sfnt_off0002c666.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C666 6084 bytes
font_05_sfnt_off0002d5fb.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5FB 3752 bytes

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