Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b2c6193540f2352…

MALICIOUS

PDF

185.8 KB Created: 2015-08-05 13:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 16c0fb3652b09518c1adeff58ef63460 SHA-1: 9baf52501b6f820d98c156188513ffef86d3b502 SHA-256: 1b2c6193540f235230acc73f7ea1410a85d808fe13aa48ce93c1cd11474b492d
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/..., is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, limiting further analysis of the payload.

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=fl+studio+11+%D0%BF%D0%BE%D0%BB%D0%BD%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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/6//4304/4304434_uzoruy_kryuchkom_dlya_tolstoy_pryazhi_so_shemami.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304464_skachat_muzuyku_s_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304509_kak_napisat_zayavlenie_ob_uvolnenii_obrazec.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a84a.bin
5755e518d96d815455a94f671dc50454e680993fed88eebabda7f2defc434466		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A84A 7204 bytes
font_00_sfnt_off00024268.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24268 3556 bytes
font_01_sfnt_off00024feb.bin
f8553246d8cb994d8eb53ace25ed72b1f66079313637b760cf05ca382ae905d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FEB 14348 bytes
font_02_sfnt_off00027d0b.bin
aba31360bdd48fea9f0b97e51bc196434fdfa52bc10c9a6b36cf3627a99dbe78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D0B 14628 bytes
font_04_sfnt_off0002bd5c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD5C 6084 bytes
font_05_sfnt_off0002ccf1.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCF1 3752 bytes

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