Malicious PDF — malware analysis report

Static analysis result for SHA-256 a94c353841b0b758…

MALICIOUS

PDF

184.8 KB Created: 2015-08-05 17:32:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 01d1b4e1ab98f92dc9240a4debff7ea0 SHA-1: 154eff3b7b1c4b75c362dede734b4bdcf1b6e25e SHA-256: a94c353841b0b758b98ef1bac23823092badd8f4c90e50e0a31a09922280309f
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL 'http://botcraftman.ru/?lip&keyword=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D0%BB%D1%8E%D0%B1%D0%BE%D0%B2%D1%8C+%D0%B7%D0%B5%D0%BC%D0%BD%D0%B0%D1%8F&charset=utf-8' is the primary indicator of malicious intent. No scripts were extracted from this sample.

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+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D0%BB%D1%8E%D0%B1%D0%BE%D0%B2%D1%8C+%D0%B7%D0%B5%D0%BC%D0%BD%D0%B0%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304728_igruy_na_planshet_skachat_dlya_devochek.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305371_tuy_chelovek_tekst_pesni.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306537_instrukciya_k_chasam_gshock.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ee1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EE1 3556 bytes
font_01_sfnt_off00024c64.bin
a9d8a92605f70694001c64907989545d561ce3a4b098b1ed7a3d644d04a6c76f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C64 14588 bytes
font_02_sfnt_off00027a53.bin
4ae165705ecc41720893a92c6e94e3ee89b3be36a12e4a920505046f59c61edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A53 14468 bytes
font_03_sfnt_off0002a501.bin
cab33e31f150ec342879655becb72897fcca2e18e45d6d5610d9c84a944c19de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A501 7044 bytes
font_04_sfnt_off0002b96a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B96A 6084 bytes
font_05_sfnt_off0002c8ff.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8FF 3752 bytes

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