Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a2d1e5f3af6c062…

MALICIOUS

PDF

185.6 KB Created: 2015-07-23 21:20:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0761a98dbe5bb7c943610353985f5a79 SHA-1: d34f00eb82229f2061910e70114be6e87dc55b26 SHA-256: 8a2d1e5f3af6c062bd5ece0e14eef5fc0b7f6374c4f362476161455d9afdd6ca
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 gateway to a phishing or malware distribution site. No scripts were extracted, and the document body was not sufficiently readable to infer additional context.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+naruto+ultimate+ninja+storm+2+%D0%BD%D0%B0+pc&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184460_skachat_panel_vvoda_planshetnogo_pk.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184788_moduy_dlya_evro_trek_simulyator_2_versiya_1825.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184457_spravka_o_srednem_zarabotke_dlya_centra_zanyatosti_blank_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a798.bin
9d223bcc1bddb829dc2e55a0944c397fa58a0d70498ae252b4b1df748a501b25		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A798 7172 bytes
font_00_sfnt_off00024053.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24053 3556 bytes
font_01_sfnt_off00024dd6.bin
29fdbaf5a515f74b5ee41d8f658038ff51cb4baae85fc815352fefd8106ceb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DD6 14780 bytes
font_02_sfnt_off00027bbc.bin
451b9b7ebe5897f3fc3591d58b703a47d1b795ac6fc67dff8541c16103265583		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BBC 14836 bytes
font_04_sfnt_off0002bc74.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC74 6084 bytes
font_05_sfnt_off0002cc09.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC09 3752 bytes

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