Malicious PDF — malware analysis report

Static analysis result for SHA-256 a37a8677264b0957…

MALICIOUS

PDF

187.3 KB Created: 2015-07-25 09:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e502bce380bcd9707f22b172f5841b14 SHA-1: 6d7e05a40cf86db043ccd34f379cc13e8f151c9f SHA-256: a37a8677264b0957b031aedc28ab9dc1a17b4b5318933042c89b23e8588eec3a
92 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The embedded URL, http://botcraftman.ru/?lip&keyword=total+war+shogun+2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+repack+%D0%BC%D0%B5%D1%85%D0%B0%D0%BD%D0%B8%D0%BA%D0%B8&charset=utf-8, likely serves as a lure to download further malware or phish for credentials. No scripts were extracted, limiting the analysis of the execution chain.

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=total+war+shogun+2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+repack+%D0%BC%D0%B5%D1%85%D0%B0%D0%BD%D0%B8%D0%BA%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192621_programma_dlya_uvelicheniya_gromkosti_muzuyki.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198558_simulyator_svidaniy_anime_na_russkom_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197131_ya_smotryu_na_tebya_skachat_epub.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002abf6.bin
083a09eba2def9a731cbe1f51ca6890e26fdd465b05926981f32b34bb6d0ecf7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ABF6 7852 bytes
font_00_sfnt_off000243f5.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243F5 3556 bytes
font_01_sfnt_off00025178.bin
9fc31330e7fc974604158081833f40c6f435d056c686db6cee003c0e3bc48ca9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25178 15216 bytes
font_02_sfnt_off00028050.bin
44cec490f3f16c7c213b123f66798100d59f71bd79ede4fd96631f046c46e291		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28050 14816 bytes
font_04_sfnt_off0002c33c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C33C 6084 bytes
font_05_sfnt_off0002d2d1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2D1 3752 bytes

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