Malicious PDF — malware analysis report

Static analysis result for SHA-256 b882dea9f3c236ac…

MALICIOUS

PDF

183.8 KB Created: 2015-07-25 11:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: fbdbb7dcc0c0f167d3d8017888e3278c SHA-1: f1436a1a2d6f36da3565a472b145e5d8678ac78b SHA-256: b882dea9f3c236acc53a0cc3ccd65f9246761e7fb60246314f69ce99f2c8c8bd
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 points to 'botcraftman.ru', which is identified as a malicious redirector. No scripts were extracted, and the document body was not parsable, limiting further analysis of the exact 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%83%D0%BB%D1%8C%D1%82%D1%80%D0%B0%D0%B7%D0%B2%D1%83%D0%BA+%D0%BE%D1%82+%D0%BA%D0%BE%D0%BC%D0%B0%D1%80%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199180_skachat_igru_robokraft_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4193/4193925_klyuch_bazis_mebelschik_8.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198621_skachat_igru_simulyator_gruzoperevozok.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023dca.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DCA 3556 bytes
font_01_sfnt_off00024b4d.bin
94a5e9fdbde7e83e8654ea6eb4c463179ed0c8918e950065537778020210c412		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B4D 14344 bytes
font_02_sfnt_off00027890.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27890 14468 bytes
font_03_sfnt_off0002a342.bin
96a620f73c45bc5b4c04ff9710c9a1e1f5d57e48cd8a4edd8fbb502b16cd7e99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A342 6404 bytes
font_04_sfnt_off0002b589.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B589 6084 bytes
font_05_sfnt_off0002c51e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C51E 3752 bytes

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