Malicious PDF — malware analysis report

Static analysis result for SHA-256 f91cb2c27d72298b…

MALICIOUS

PDF

183.6 KB Created: 2015-08-08 09:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ea2da9523a846cbc4aeba0edde8d34d2 SHA-1: f2bb15f0e1a668c1129a914ef114c3942d104409 SHA-256: f91cb2c27d72298b5bf43c0fc50f90e4132268f8b11899ffd034bb07c04ca283
92 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The presence of this link suggests the document is designed to lure users to a malicious website. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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%9D%D0%B5%D0%BC%D0%B5%D1%86%D0%BA%D0%B8%D0%B9+%D0%B3%D0%BE%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9+%D1%88%D1%80%D0%B8%D1%84%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383918_zet_9_geo_kryak_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383848_russkaya_noch_vchetverom.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384048_rabochaya_programma_po_informatike_6_klass_bosova_fgos_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023dc4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DC4 3556 bytes
font_01_sfnt_off00024b47.bin
52aa5106a065b24880fe81c907259b18f7ff681d82c9e2889a45ab3c1dd486c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B47 14180 bytes
font_02_sfnt_off000277fa.bin
a3719aab4ed4c1d266a8d8b3542e156133e013430199cbe471a0c690948d7bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x277FA 14520 bytes
font_03_sfnt_off0002a2cc.bin
a8d9146834c7ff476f725db549fbb1b31bccf8f876fb4bc728a3697ee606619b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2CC 6384 bytes
font_04_sfnt_off0002b4ca.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4CA 6084 bytes
font_05_sfnt_off0002c45f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C45F 3752 bytes

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