Malicious PDF — malware analysis report

Static analysis result for SHA-256 72638ee58415d459…

MALICIOUS

PDF

185.4 KB Created: 2015-08-08 11:35:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e5ef93b8dfbbaca4fe36ff0f360cd604 SHA-1: 74d67221130e4bdca4dd55a2f7464ff5ce3510e4 SHA-256: 72638ee58415d45996a8362bea415ea1377e6c905fd74d81688893e357461346
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical finding for a malicious redirector link and a high ML score. ClamAV also detected it as 'Pdf.Dropper.Agent-8787679-0'. The embedded URL points to 'http://botcraftman.ru/', which is identified as known malicious infrastructure. This suggests the document's primary purpose is to lure users to a malicious site, likely as part of a phishing or malware distribution campaign.

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-8787679-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8787679-0
  • 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%BF%D0%B8%D1%81%D1%8C%D0%BC%D0%BE+%D0%B2+%D1%84%D1%81%D1%81+%D0%BE+%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B5+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4386/4386660_skachat_igruy_cherez_torrent_vedmak_2.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385538_kartuy_evropuy_dlya_shturman_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383806_shema_impulsnogo_bloka_pitaniya_12v.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002437f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2437F 3556 bytes
font_01_sfnt_off00025102.bin
b23dee1f299e94b15b23c6d6c7258bc9eceec88fd744941ef79ce958ee5e2a5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25102 14140 bytes
font_02_sfnt_off00027d67.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D67 14468 bytes
font_03_sfnt_off0002a81a.bin
9669adcb74195dc92ae83e3032f75469ecfea03544f904e89fdf43d938dcab24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A81A 6784 bytes
font_04_sfnt_off0002bb9f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB9F 6084 bytes
font_05_sfnt_off0002cb34.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB34 3752 bytes

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