Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3561db920832ca4…

MALICIOUS

PDF

187.6 KB Created: 2015-07-23 20:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b9fefe25a0b7b84bb581ffd6eb7d52fb SHA-1: 8e926b3191f2f10d1d7b5d6da506036f9a8587be SHA-256: a3561db920832ca477cf265fe16a8206a0c2a364da50c522e4753746c213aed8
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. The presence of this link suggests the document is designed to lure the user to a site that may host further malicious content or phishing forms. No scripts were extracted, and the document body was not parsable.

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+2+%D0%B3%D0%B8%D1%81+%D0%BD%D0%B8%D0%B6%D0%BD%D0%B8%D0%B9+%D0%BD%D0%BE%D0%B2%D0%B3%D0%BE%D1%80%D0%BE%D0%B4+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184635_biznes_plan_po_razvedeniyu_kur_kurinuyy_biznes_skachat_primeruy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184536_skachat_soni_vegas_pro_10_na_russkom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184287_shpargalki_po_algebre_egye_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024852.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24852 3556 bytes
font_01_sfnt_off000255d5.bin
2f91eb0b34c090aa7dcc7170ee923a11f0a53edfd99bb6ded260f4618c8ae1f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255D5 14856 bytes
font_02_sfnt_off0002847c.bin
52b52d0d5eab36f5e195b69cc80d7b4389c37994b46690bcf69e94df164584c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2847C 14468 bytes
font_03_sfnt_off0002af29.bin
bb297a7cac281e5b9648ad87e16358e23d417080bb1a6f394b3c74a233d835e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF29 7332 bytes
font_04_sfnt_off0002c48e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C48E 6084 bytes
font_05_sfnt_off0002d423.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D423 3752 bytes

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