Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a9af5b49060c780…

MALICIOUS

PDF

185.1 KB Created: 2015-08-08 09:36:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 05dabc5c23fa3f126cb09379fde38364 SHA-1: 0fb2a8dd8a33ff5f8ecb7459ddc7d8b8607c2dd1 SHA-256: 9a9af5b49060c780603bc16a2340eb45003017d1605bece13a09a819b6b9b363
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 compromise, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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=elm327+bluetooth+%D0%BA%D0%BE%D0%B4+%D0%BF%D0%BE%D0%B4%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%BD%D0%B8%D1%8F&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://img0.liveinternet.ru/images/attach/c/6//4384/4384042_goluye_krasivuye_zhopuy.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383909_skachat_na_telefon_govoryaschego_kota.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e27.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E27 3556 bytes
font_01_sfnt_off00024baa.bin
88c3b66c5b42aebe2d8db308849a2cd8b127785f3ddf45a39a6bedb7b618e8ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BAA 14768 bytes
font_02_sfnt_off000279d5.bin
fe429cb0926ba2ccf0d1689d27283f23dc7eb727a487dac283e4b8fa09d32a25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279D5 15020 bytes
font_03_sfnt_off0002a610.bin
a873314db7a8665feb489463b480b8b27fa93db156231e4c00eda08b394ffb3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A610 7120 bytes
font_04_sfnt_off0002bacc.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BACC 6084 bytes
font_05_sfnt_off0002ca61.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA61 3752 bytes

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