Malicious PDF — malware analysis report

Static analysis result for SHA-256 d34990e1a7c19a69…

MALICIOUS

PDF

186.3 KB Created: 2015-07-27 08:39:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3012dabced03d6ad916cb12f3efc3679 SHA-1: d2035257418d9880f1e01130ae69a3e2bf274cfc SHA-256: d34990e1a7c19a69f8358b452829c9e8a576a1566f5649efe70f3b4725e4f719
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link to 'http://botcraftman.ru/'. This suggests the document's primary purpose is to lure the user to this malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for a malicious redirect.

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%B5%D0%B3%D1%8D+%D0%BF%D0%BE+%D0%B8%D0%BD%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+2015+%D1%81+%D1%80%D0%B5%D1%88%D0%B5%D0%BD%D0%B8%D1%8F%D0%BC%D0%B8+%D0%B8+%D0%BF%D0%BE%D1%8F%D1%81%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F%D0%BC%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190845_lapti_tv_smotret_onlayn_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198203_skachat_egye_po_matematike_2015_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4219/4219678_skachat_kartu_na_maynkraft_gorod.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243e1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243E1 3556 bytes
font_01_sfnt_off00025164.bin
328d92247e95563c5e41a6dcc59e39b5378cff504fcb3adc0fb4aa1692d43504		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25164 14740 bytes
font_02_sfnt_off00027fb4.bin
bac0b5766c6837351292e659a532309cd72f068733764942b3d36afb25a47e9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FB4 14700 bytes
font_03_sfnt_off0002ab09.bin
438d4663ee488fda78a4959b92de19982d198a705406ef70c9a97eb9017634b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB09 6960 bytes
font_04_sfnt_off0002bf36.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF36 6084 bytes
font_05_sfnt_off0002cecb.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CECB 3752 bytes

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