Malicious PDF — malware analysis report

Static analysis result for SHA-256 450a5312fad07d6a…

MALICIOUS

PDF

182.7 KB Created: 2015-07-24 13:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9d244dc2ec59503549a606983b3af8b0 SHA-1: a9bb1532cfc7f922854098254bc2cdaec02a4f29 SHA-256: 450a5312fad07d6adf73682d3ef39bfe40ad65a15bd00183e7162bd4f4521fa8
90 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 at botcraftman.ru. This indicates a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • 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.
  • 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%B4%D0%BF+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190711_printhelp_skachat_besplatno_s_klyuchom.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191053_shema_yelektro_provodki_folcvagen_passat_b5_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184319_kryak_alavar_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023c6a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C6A 3556 bytes
font_01_sfnt_off000249ed.bin
5438d34a1076ca5f1854a7bea5a725ea5a2157c67b32f8d5d391be22090ee86a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249ED 14280 bytes
font_02_sfnt_off000276dc.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x276DC 14468 bytes
font_03_sfnt_off0002a18f.bin
5c6bb23957e197bd745b04bd7dd85b6fa918ceb96ed6b414f7e6587888d8f05e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A18F 5684 bytes
font_04_sfnt_off0002b109.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B109 6084 bytes
font_05_sfnt_off0002c09e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C09E 3752 bytes

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