Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7b02b3e2b4e8fa…

MALICIOUS

PDF

186.2 KB Created: 2015-08-08 10:35:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 012bbfc5889ff817e5e4e058735b1464 SHA-1: cd4ad0d7fe6982efb1071cedb4d306ab1a484fe6 SHA-256: fe7b02b3e2b4e8fac48e2f6c839d60eb6bd6fc422ecabd510d278aed43c5fb8d
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to botcraftman.ru, which is flagged as a known malicious redirector. This indicates the PDF is likely used as a lure to direct users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence of 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+windows+7+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+x64+2015+%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://img1.liveinternet.ru/images/attach/c/6//4385/4385506_buket_iz_igrushek_svoimi_rukami_poshagovaya_instrukciya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384198_shrift_gost_b_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384234_interstellar_marines_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a7e7.bin
8f2a6e554db9a626b28a718cdf435a434a789b8ed6008ab0fc47c07c3e8a62cd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A7E7 7728 bytes
font_00_sfnt_off00024224.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24224 3556 bytes
font_01_sfnt_off00024fa7.bin
0f12b9cef4f21a55bdde8a98bc5a3380cddde7bc409b39e1abf0e73509386e03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FA7 14356 bytes
font_02_sfnt_off00027c04.bin
36a50671ddac0837ae46fee21e057f4c3d3cec5e654e3e6a2f6cf4c82ec0f9e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C04 14828 bytes
font_04_sfnt_off0002bee1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEE1 6084 bytes
font_05_sfnt_off0002ce76.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE76 3752 bytes

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