Malicious PDF — malware analysis report

Static analysis result for SHA-256 f448e7799a77339b…

MALICIOUS

PDF

183.9 KB Created: 2015-08-09 15:29:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 98c97d1064c98c4d6b5373cad638fe84 SHA-1: 967635675464442a0e85d5e5ad23dac7e35b8dbe SHA-256: f448e7799a77339b0bd194102dc5d2c1f7c5836757acd32cf6f7d4242d3bc68a
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, limiting further analysis of the payload.

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%B1%D0%BE%D1%82+%D0%B4%D0%BB%D1%8F+%D0%BB%D0%B0%D0%B9%D0%BA+%D0%BC%D0%B0%D1%88%D0%B8%D0%BD%D0%B0+%D0%B2%D0%BA%D0%BE%D0%BD%D1%82%D0%B0%D0%BA%D1%82%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4392/4392342_kak_pereustanovit_android_na_planshete_prestigio.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388623_internuy_173_seriya_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388367_gimnastika_dlya_palchikov_elena_kosinova.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e14.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E14 3556 bytes
font_01_sfnt_off00024b97.bin
744bbe639f54648b60d73a4824c67cc102a0658b44302d6acffb8bc4315ed34c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B97 14332 bytes
font_02_sfnt_off00027893.bin
8390d544ffa49a589930618729811396386a5a1d2d8844cf0ed885bb7446f1bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27893 14520 bytes
font_03_sfnt_off0002a363.bin
0c612adc2b2b6764e1d5a8bddebaefe238ffc0edfc083b6c8cf6a4505fe91aaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A363 6524 bytes
font_04_sfnt_off0002b5d9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B5D9 6084 bytes
font_05_sfnt_off0002c56e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C56E 3752 bytes

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