Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e293c270c0b2b9…

MALICIOUS

PDF

184.2 KB Created: 2015-07-23 20:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f0c43beba0882ff72c2e6076b93bd741 SHA-1: 0c5aa795f510a68f820cbfda1507191d6bf3cc10 SHA-256: e9e293c270c0b2b94a5e275f44151afd28de3126076b310b6a616cfa18810e85
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is known malicious infrastructure. No scripts were extracted, but the presence of a malicious redirector indicates an attempt to lure the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7495063-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7495063-0
  • 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%BA%D0%BE%D0%B4%D1%8B+%D0%BD%D0%B0+%D1%81%D0%BA%D0%B0%D0%B9%D1%80%D0%B8%D0%BC+5+%D0%BD%D0%B0+%D0%B0%D1%80%D0%B1%D0%B0%D0%BB%D0%B5%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184457_spravka_o_srednem_zarabotke_dlya_centra_zanyatosti_blank_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184656_skachat_chit_dlya_maynkraft_152_na_adminku.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183254_kto_nas_zaschischaet_proekt_3_klass.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e55.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E55 3556 bytes
font_01_sfnt_off00024bd8.bin
5a2e7157bc10294eeb510c4648af476b6e10585f9742161aeab9ec0e94d4fea5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24BD8 14060 bytes
font_02_sfnt_off0002785a.bin
734a0e3b4f833bf65ef9aa9a76728ab53f12e51cd926d3a6291e3b266682b037		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2785A 14640 bytes
font_03_sfnt_off0002a38d.bin
a0806a51febb79c5554ca9a641e25104c2f80d66d6924344af8814fc50ae6a3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A38D 6828 bytes
font_04_sfnt_off0002b728.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B728 6084 bytes
font_05_sfnt_off0002c6bd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6BD 3752 bytes

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