Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b78958f64b84066…

MALICIOUS

PDF

184.8 KB Created: 2015-08-05 13:25:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e34874206968d25e18623a0f5140d50b SHA-1: e058d52d7938a5d93543f370daa5767dfc82884b SHA-256: 2b78958f64b8406686aa5d26f6cbf2197f8f1ade931890def1c9e6903098b8c0
92 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector, http://botcraftman.ru/. This indicates the file is designed to lure users 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 the attack pattern.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D1%81%D0%BC%D0%B5%D1%80%D1%82%D1%8C+%D1%88%D0%BF%D0%B8%D0%BE%D0%BD%D0%B0%D0%BC&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304447_interesnuyy_scenariy_vuypusknogo_v_4_klasse.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304463_neizvestnuyy_s_drakkara_neuchtennuyy_3_konstantin_muravev.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304496_skachat_moduy_dlya_maynkraft_147_na_prevraschenie_v_mobov.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240fc.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240FC 3556 bytes
font_01_sfnt_off00024e7f.bin
d6670172611d74d695fd0c9c63f4df980206916a0b1c8808fff13981cc854863		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E7F 14424 bytes
font_02_sfnt_off00027be3.bin
8c5e5bc4674cee60ec6c1619e60533ff44be00efca6b5f228c587d2f19a61a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BE3 14520 bytes
font_03_sfnt_off0002a6b2.bin
c5669e24880e5fa5a0d55b1f8c8e58bb4b5147e0c999e8aef92b28bf41f0b9bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6B2 6508 bytes
font_04_sfnt_off0002b946.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B946 6084 bytes
font_05_sfnt_off0002c8db.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8DB 3752 bytes

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