Malicious PDF — malware analysis report

Static analysis result for SHA-256 438456711f01115b…

MALICIOUS

PDF

188.2 KB Created: 2015-07-23 21:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3118a1a8dfd388db98d94c5907695a0e SHA-1: d68521a80aa10474c0f37455ce344a991a0169d1 SHA-256: 438456711f01115bf49eeafbc6de0ab7c71b9956230adbc6f4cf18342eeff8e3
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 strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific 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%80%D0%B0%D0%BC%D0%BA%D0%B8+%D0%B4%D0%BB%D1%8F+%D0%B1%D0%BB%D0%B0%D0%B3%D0%BE%D0%B4%D0%B0%D1%80%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE%D0%B3%D0%BE+%D0%BF%D0%B8%D1%81%D1%8C%D0%BC%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184639_skachat_besplatno_dolzhnostnuyu_instrukciyu_direktora_mup_zhkh.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184782_programma_kruzhka_v_dou_po_matematike.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184404_skachat_igruy_na_planshet_besplatno_maynkraft_s_modami_095.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024c74.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C74 3556 bytes
font_01_sfnt_off000259f7.bin
4c63407d7f342c25a256d4b12b96ed2a8974f10d7965d14126f9f5b36297f29b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x259F7 14664 bytes
font_02_sfnt_off00028806.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28806 14468 bytes
font_03_sfnt_off0002b2b8.bin
75de63901a884dc4fd9c408d8ec0fcfc1638b9998d8594eb905c00cc66a287c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B2B8 6972 bytes
font_04_sfnt_off0002c6e2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6E2 6084 bytes
font_05_sfnt_off0002d677.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D677 3752 bytes

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