Malicious PDF — malware analysis report

Static analysis result for SHA-256 d81e147ca716a1a3…

MALICIOUS

PDF

187.1 KB Created: 2015-08-08 09:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a3c0d1d545aaf5cd4373a59d66d18da6 SHA-1: f924dd68edba39c34a027bb05549183fbbd08647 SHA-256: d81e147ca716a1a34983a7813ef9a3e6805981874a8cd85118c1dc1d1e243f34
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and a machine learning classifier, indicating malicious content. A critical heuristic identified a link to known malicious redirector infrastructure at http://botcraftman.ru/. This suggests the document is intended to lure users to a dangerous site, likely for further exploitation or malware delivery.

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-7524019-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7524019-0
  • 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%8D%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D0%BD%D0%BD%D1%8B%D0%B5+%D0%B2%D1%8B%D0%BA%D1%80%D0%BE%D0%B9%D0%BA%D0%B8+burda+%D0%B4%D0%BB%D1%8F+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%8B+redcafe&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384238_skachat_torrent_filmuy_s_goblinskim_perevodom.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384348_skachat_besplatno_igruy_na_telefon_samsung_gtb5722.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383853_videokurs_pilates_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244a9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244A9 3556 bytes
font_01_sfnt_off0002522c.bin
aab377f72ecd49e8bf89a6dd81b940a38350cd2d994ea615b32ca225563b8577		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2522C 14764 bytes
font_02_sfnt_off00027fea.bin
376e61737afa5df1f27f0d649b0106783351d092a1a9e273b88a820c42352b1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FEA 14696 bytes
font_03_sfnt_off0002ab51.bin
456e99dfb941b8d0fdd2efa5cd06bb8174d892384df890e5bd6b404df3e990e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB51 7800 bytes
font_04_sfnt_off0002c268.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C268 6084 bytes
font_05_sfnt_off0002d1fd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1FD 3752 bytes

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