Malicious PDF — malware analysis report

Static analysis result for SHA-256 b571b16e76fe438c…

MALICIOUS

PDF

186.4 KB Created: 2015-07-24 23:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c37a734e44ebaa5b6a2cba18c2253628 SHA-1: bf4675b00cf0c9ff1009fd6a948537f50249bcd7 SHA-256: b571b16e76fe438c686687a33b28c9df15fda43612e57d6473c4e7e0ce60b352
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 embedded URL points to 'http://botcraftman.ru/', which is likely used to redirect users to a malicious website. No scripts were extracted, and the document body was not parsable, limiting further analysis of the exact lure.

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%BD%D0%B0%D0%BA%D1%80%D1%83%D1%82%D0%BA%D0%B0+%D0%BE%D0%BA%D0%BE%D0%B2+%D0%B2+%D0%BE%D0%B4%D0%BD%D0%BE%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%BD%D0%B8%D0%BA%D0%B0%D1%85+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188527_spyhunter_polnuyu_versiyu.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185158_referatuy_skachat_besplatno_bez_registracii.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192871_minecraft_igrat_onlayn_besplatno_bez_registracii_seychas_3d.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245e9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245E9 3556 bytes
font_01_sfnt_off0002536c.bin
ab45217cff4f81c5bf64d505232e18ccec695cf09e6ed474896a7f80d2d175a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2536C 14828 bytes
font_02_sfnt_off00028161.bin
c947384ca9da6b338a802e2d79393af65bbc7ec579a56be2392c779918975b81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28161 14532 bytes
font_03_sfnt_off0002ac54.bin
336903eef2ffa943142e574635e580be7b7b25534aa8162dc8c2e460646e78ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC54 6796 bytes
font_04_sfnt_off0002bfef.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFEF 6084 bytes
font_05_sfnt_off0002cf84.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF84 3752 bytes

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