Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a868aec85df5ac2…

MALICIOUS

PDF

184.9 KB Created: 2015-08-08 16:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c0d16927d60c0015262d851d132c0ee0 SHA-1: 6cec7903fff645b7aa2dabce69cdab5bb90be263 SHA-256: 7a868aec85df5ac25bd24b519fcccb23d7a64da5fb4535bb1acfee743babc6f5
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, botcraftman.ru. This indicates a phishing or social engineering attempt to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

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%B0%D0%BB%D0%B3%D0%B5%D0%B1%D1%80%D0%B0+10+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%B2%D0%B8%D0%BB%D0%B5%D0%BD%D0%BA%D0%B8%D0%BD+%D1%80%D0%B5%D1%88%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385938_skachat_beta_versiyu_gta_5_na_pc.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4397/4397105_skachat_filmuy_uzhasov_besplatno_i_bez_registracii.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4393/4393578_poliglot_angliyskiy_za_16_chasov_skachat_besplatno_vse_serii.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024228.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24228 3556 bytes
font_01_sfnt_off00024fab.bin
587798c4a2de7b868aa1bd53aa8d0137cbc79cc06c3882800e3c7fa71cc45122		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FAB 14408 bytes
font_02_sfnt_off00027c99.bin
651e40ac60582ae83be48ca8bdb16591dcdc5063f8063de4e1134b528ef922c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C99 14520 bytes
font_03_sfnt_off0002a76a.bin
13f2ccd595a49db270aa9db9f4c100515cb5d005aa305178c17407fd92dc8919		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A76A 6484 bytes
font_04_sfnt_off0002b9d4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9D4 6084 bytes
font_05_sfnt_off0002c969.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C969 3752 bytes

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