Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7719e06f223943c…

MALICIOUS

PDF

185.4 KB Created: 2015-07-25 22:58:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1017475895234270503bc8892915def0 SHA-1: 9e6d2f78b1e43a5e75ed18d4357657407581f146 SHA-256: a7719e06f223943ce3d7caa348216f62d39d578eb6773838300a2b0c28f4d4ce
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The URL 'http://botcraftman.ru/?lip&keyword=windows+82+%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&charset=utf-8' is likely part of a phishing or malware distribution scheme. No scripts were extracted, limiting the analysis of the file's specific payload delivery mechanism.

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=windows+82+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4208/4208390_real_football_2011_na_android_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191805_avtobiografiya_bendzhamina_franklina_audiokniga.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4209/4209935_otvetuy_na_biletuy_yekzamenov_dlya_slesarey_kip_i_avtomatiki.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a783.bin
00aee628c7e9bd08b834eb16e8a2cc340d8f56235ea6a7093c51ead88afa0a41		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A783 6968 bytes
font_00_sfnt_off000240df.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240DF 3556 bytes
font_01_sfnt_off00024e62.bin
1393afa431f075be99e83fcc463757f143d0806f6b3a2c2839644e0b0cb01dcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E62 14816 bytes
font_02_sfnt_off00027c94.bin
7e45e0eb6f652b7d3c85689677d98ad11dba6cb30daa1da26b9152a633e58c08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C94 14536 bytes
font_04_sfnt_off0002bbab.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBAB 6084 bytes
font_05_sfnt_off0002cb40.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB40 3752 bytes

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