Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e5b6db49a1e1c6…

MALICIOUS

PDF

186.5 KB Created: 2015-07-25 15:09:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1cfbee527efd936a5d613644705cfd55 SHA-1: a6c78ba4f1f92ab28653af5455068f03736093b4 SHA-256: 28e5b6db49a1e1c6764002ad167d5e46ea38f2a797772ed53b3f7c9c8eb225a6
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 embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent. While no scripts were extracted, the presence of this malicious link suggests the document is intended to lure users to a site that likely hosts further malicious content or exploits. The ML classifier also strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BC%D0%BE%D0%B4+%D0%BF%D0%BE%D0%B2%D0%B5%D0%BB%D0%B8%D1%82%D0%B5%D0%BB%D1%8C+%D0%B7%D0%BE%D0%BD%D1%8B+%D0%B4%D0%BB%D1%8F+%D1%81%D1%82%D0%B0%D0%BB%D0%BA%D0%B5%D1%80+%D1%82%D0%B5%D0%BD%D1%8C+%D1%87%D0%B5%D1%80%D0%BD%D0%BE%D0%B1%D1%8B%D0%BB%D1%8F+10004&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185562_programma_dlya_didzheev_skachat_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186332_prodazha_informacii_v_internete_ot_a_do_ya_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4199/4199385_topolinuyy_puh_tekst_pesni.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245db.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245DB 3556 bytes
font_01_sfnt_off0002535e.bin
2f354a4a979464348c5322089b3d0fbea83d478fa1bd8beaf72a8cf9d6b08373		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2535E 14160 bytes
font_02_sfnt_off00027fb9.bin
9b83972e26c7aa6f98da16a65fddcd9aa4a28217872659b1571edcff74a143b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FB9 14468 bytes
font_03_sfnt_off0002aa6c.bin
ecfc746e9fe1615817ae172c0220d76618910abf72a82da096387765468332d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA6C 7392 bytes
font_04_sfnt_off0002c01b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C01B 6084 bytes
font_05_sfnt_off0002cfb0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFB0 3752 bytes

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