Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec3d5bbc1ede71f…

MALICIOUS

PDF

184.7 KB Created: 2015-08-05 16:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f1b8a133197148780d91fba887496bfc SHA-1: faa3feff1d3ab3a5830265cfe369a90cad1d8ebb SHA-256: 8ec3d5bbc1ede71f2b0adfeb48b1e1d2168c146db2cafb9227d148b66e48a3d8
90 Risk Score

Malware Insights

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

The PDF file 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/ likely serves as a lure to a phishing or malware distribution site. 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+%D0%B8%D0%B3%D1%80%D1%8B+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D1%82%D0%BE%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304943_nevozmozhno_zagruzit_torrent_neverno_zakodirovan_kak_ispravit.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306017_kompilyator_less_faylov.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305089_skachat_rk_704_na_russkom.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024260.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24260 3556 bytes
font_01_sfnt_off00024fe3.bin
f242a975a36bad0f3e736ab014126178b821e90b6345057a5baf37e95cdea5ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FE3 14180 bytes
font_02_sfnt_off00027c45.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C45 14468 bytes
font_03_sfnt_off0002a6f7.bin
3af8e94ba837a15b871c8f062d67f3460384ff76a60dd3b9b48efb39968293b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6F7 6396 bytes
font_04_sfnt_off0002b911.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B911 6084 bytes
font_05_sfnt_off0002c8a6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8A6 3752 bytes

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