Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1859be1d34319e7…

MALICIOUS

PDF

187.2 KB Created: 2015-08-08 09:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 336bb24553046e70600f94175ccc6bf0 SHA-1: ef23ced979a518c33fe586b93a3574032dedad17 SHA-256: e1859be1d34319e7b96ce0167964b34e1a6cf12d4dded7b24ca722b47053b3e3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a critical alert for a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful website.

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=guild+wars+2+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D1%8B%D0%B9+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B9+%D1%81%D0%B5%D1%80%D0%B2%D0%B5%D1%80+%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//4384/4384381_stavka_bolshe_chem_zhizn_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383772_risen_3_titan_lords_skachat_torrent_mehaniki.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383929_zvuki_skachat_besplatno_mp3.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002acc2.bin
8a1c47f7686dfb60f196bcd2c1a3ea29efd6c4d188a2f51cce0a0291fefead03		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ACC2 7556 bytes
font_00_sfnt_off000245f7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245F7 3556 bytes
font_01_sfnt_off0002537a.bin
50fff3c7b369690e2c0c8ca432f89c842fcb7e303fc755aad6ca164474004706		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2537A 14776 bytes
font_02_sfnt_off00028156.bin
4dee6add664a5b8a365eecf8bf93c7e0a8cd88156df4caf8cb6f8c2746990370		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28156 14688 bytes
font_04_sfnt_off0002c303.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C303 6084 bytes
font_05_sfnt_off0002d298.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D298 3752 bytes

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