Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c37f233bb7dd139…

MALICIOUS

PDF

187.1 KB Created: 2015-08-08 10:49:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3fa06f463b575cc40b73551ea09c041e SHA-1: a47b13657f15cd8577e58cbafa44f94bf3f7bb20 SHA-256: 6c37f233bb7dd1392d5203d2fdc9f2d52c6765a88d1c2bea6b79190e08aaf838
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and contains a link to a known malicious redirector, http://botcraftman.ru/. This suggests the document is designed to lure users to a malicious website, likely for phishing or malware distribution. No scripts were extracted, but the presence of the malicious URL is a strong indicator 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=%D0%B4%D0%BE%D0%B3%D0%BE%D0%B2%D0%BE%D1%80+%D1%81%D1%81%D1%83%D0%B4%D1%8B+%D0%B1%D0%B5%D0%B7%D0%B2%D0%BE%D0%B7%D0%BC%D0%B5%D0%B7%D0%B4%D0%BD%D0%BE%D0%B3%D0%BE+%D0%BF%D0%BE%D0%BB%D1%8C%D0%B7%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385867_knigi_o_britni_spirs.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385157_komandnaya_stroka_na_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384183_scenariy_dnya_rozhdeniya_18_let_docheri.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_off00024969.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24969 3556 bytes
font_01_sfnt_off000256ec.bin
de23b3beafa8dfaf1a55f0a27a603324b0e19bf77db4dff3c24a2dcc68667687		 pdf-font-stream PDF embedded font (sfnt) at offset 0x256EC 14108 bytes
font_02_sfnt_off00028348.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28348 14468 bytes
font_03_sfnt_off0002adfb.bin
4e327c2a295ac74474378beb32601c1223aeea75017a244f8dbafca7d31d6b73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADFB 7048 bytes
font_04_sfnt_off0002c269.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C269 6084 bytes
font_05_sfnt_off0002d1fe.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1FE 3752 bytes

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