Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bfc723e11c077da…

MALICIOUS

PDF

184.3 KB Created: 2015-07-24 19:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ed0a131aaad3b26138f447e9d555f20d SHA-1: e5d4708069923b1e2844cbc8304dd34e4ce9b7c9 SHA-256: 5bfc723e11c077da1c05f9506ee9177efa3e5acfbba90ca96cafcc2d65d85837
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the URL http://botcraftman.ru/, which is likely used to host or redirect to a malicious payload or phishing page. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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%A4%D0%BE%D1%82%D0%BE+%D0%B3%D0%BE%D0%BB%D0%BE%D0%B9+14+%D0%BB%D0%B5%D1%82%D0%BD%D0%B5%D0%B9+%D0%B4%D0%B5%D0%B2%D1%83%D1%88%D0%BA%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191900_dispetcher_risunkov_microsoft_office_2013_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190778_skolko_nuzhno_reshit_po_matematike_na_porog_v_2015.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193468_kod_moiseya_skachat_torrent.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ea7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EA7 3556 bytes
font_01_sfnt_off00024c2a.bin
eef526815426ee5a26400f2e77b73f6d5fbc66e2a09fe3ecfe973c3d7ae8c29c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C2A 14664 bytes
font_02_sfnt_off00027a80.bin
0601e75e06c2470023a705141b7618868f83c7552368ab586042198d056e4df2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A80 14520 bytes
font_03_sfnt_off0002a553.bin
cee571486203d4e5841859379b18fc5092c2a22fd3be4d400c551c51f374e8d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A553 6408 bytes
font_04_sfnt_off0002b787.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B787 6084 bytes
font_05_sfnt_off0002c71c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C71C 3752 bytes

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