Malicious PDF — malware analysis report

Static analysis result for SHA-256 a599c5e812283a87…

MALICIOUS

PDF

187.7 KB Created: 2015-08-08 09:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e05feebd1125e95ae80a6e38c1ddb7b0 SHA-1: 68999dc3de22e710ffe664d62ddde5ae0a1db4c2 SHA-256: a599c5e812283a87c9808e089f5dd6e7b8ce89ec15c1b2dd3db842a1361458fc
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to http://botcraftman.ru/. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample, but the presence of the malicious URL is sufficient evidence of malicious intent.

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-7621847-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7621847-0
  • 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%B0%D1%88%D0%B0+%D0%BA%D0%B0%D1%80%D0%B5%D0%BF%D0%B8%D0%BD%D0%B0+%D0%B8%D1%81%D0%BA%D1%83%D1%81%D1%81%D1%82%D0%B2%D0%BE+%D0%B4%D0%B5%D0%BB%D0%BE%D0%B2%D0%BE%D0%B3%D0%BE+%D0%BF%D0%B8%D1%81%D1%8C%D0%BC%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/6//4384/4384015_vuykroyki_odezhduy_besplatno_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383894_skachat_film_gladiator_v_kachestve_full_hd_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384111_programma_kameru_dlya_lenovo.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024898.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24898 3556 bytes
font_01_sfnt_off0002561b.bin
1340acb55a932c343b509327038633e3b12cc3bd2067cb01f684ac05763e1ad8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2561B 15472 bytes
font_02_sfnt_off0002865d.bin
c521cb7f32363069232cb6cf023e13d81dfc7f2346484feaa89f0b3c8cd570ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2865D 14520 bytes
font_03_sfnt_off0002b12f.bin
f41f41d800530a67dbaffb248ef3ad77eb339f7b46339a295f75271f5d2b0d44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B12F 6800 bytes
font_04_sfnt_off0002c4d7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4D7 6084 bytes
font_05_sfnt_off0002d46c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D46C 3752 bytes

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