Malicious PDF — malware analysis report

Static analysis result for SHA-256 59e8dcca9c8c97a2…

MALICIOUS

PDF

186.0 KB Created: 2015-07-24 00:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f2845100cbf50ccd8944431bc0946869 SHA-1: d1811bef4ccfe78453981321672c26568869aa7c SHA-256: 59e8dcca9c8c97a204b81868a7e02f4a274d6fadbff867ce93b04aa3ab8dbbd1
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 associated with malicious redirects. No scripts were extracted, and the document body was truncated, 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%81%D1%82%D0%B0%D0%BB%D0%BA%D0%B5%D1%80+%D0%BD%D0%BE%D0%B2%D0%B0%D1%8F+%D0%B2%D0%BE%D0%B9%D0%BD%D0%B0+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%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/5//4184/4184756_stalik_hankishiev_mangal_skachat_pdf.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184471_dnevnik_po_praktike_v_prokurature_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184419_godovaya_kontrolnaya_rabota_po_biologii_8_klass_s_otvetami.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024405.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24405 3556 bytes
font_01_sfnt_off00025188.bin
fb8452758b37159406f7a6adf475de21f71379abedf1f23b716e71781f6064eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25188 14832 bytes
font_02_sfnt_off0002801e.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2801E 14468 bytes
font_03_sfnt_off0002aad0.bin
5486485a8ff8e93890d3d02cc8c9f7b59b66b05d1c8ea0366067ed31a31f0237		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAD0 6716 bytes
font_04_sfnt_off0002be24.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE24 6084 bytes
font_05_sfnt_off0002cdb9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDB9 3752 bytes

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