Malicious PDF — malware analysis report

Static analysis result for SHA-256 53af0800136ebd2c…

MALICIOUS

PDF

185.4 KB Created: 2015-07-24 01:07:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e1cd07450e2217aacb7d50a4158ccf1f SHA-1: 295e50c5491cfaa8052bce2bf49d23847749e139 SHA-256: 53af0800136ebd2cec9908a9e5e85e70266f80b870f53f5af8bb0cd78a915e7e
152 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ClamAV detection 'Pdf.Dropper.Agent-7493193-0' further confirms its malicious nature. The primary malicious IOC is the URL http://botcraftman.ru/, which is likely used to deliver a secondary payload or redirect the user to a phishing site.

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-7493193-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493193-0
  • 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%A0%D0%B5%D1%88%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA+%D0%B7%D0%B0%D0%B4%D0%B0%D1%87+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+4+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%B1%D0%BE%D0%B3%D0%B4%D0%B0%D0%BD%D0%BE%D0%B2%D0%B8%D1%87&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184760_multimedia_fusion_2_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184845_pozdravleniya_s_dnem_rozhdeniya_na_mariyskom_yazuyke.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185280_sanitarnuyy_minimum_dlya_mladshih_vospitateley.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242b7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242B7 3556 bytes
font_01_sfnt_off0002503a.bin
806cdf93c0481ba37f11135c53724df10604b590e3a8667a2cc1c81718204cfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2503A 14312 bytes
font_02_sfnt_off00027cd7.bin
7b96095eddec838b16dde3476fc754b4c069c9a17dc09f0eb55419fca347b6aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CD7 14520 bytes
font_03_sfnt_off0002a7a8.bin
acbd965952aff7a310ff3e6d0ccb1b882dd8ce1e71b9e0a1e54472ffabdce0b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7A8 6900 bytes
font_04_sfnt_off0002bb9e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB9E 6084 bytes
font_05_sfnt_off0002cb33.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB33 3752 bytes

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