Malicious PDF — malware analysis report

Static analysis result for SHA-256 b11e97f2b0adc8bf…

MALICIOUS

PDF

186.2 KB Created: 2015-07-27 18:50:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 279be2a58e6327592bb148ea2597bea0 SHA-1: c40493b007a1d8a172eb2e9af94c68b60108c1b5 SHA-256: b11e97f2b0adc8bf54c24edb7cb10607f14369df7ac03218cdb5a4b845ebf654
92 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 likely part of a phishing or malware distribution chain. No scripts were extracted from this sample.

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%84%D0%BE%D1%80%D0%BC%D0%B0+%D1%8014001+%D0%BD%D0%BE%D0%B2%D0%B0%D1%8F+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B7%D0%B0%D0%BF%D0%BE%D0%BB%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4220/4220838_sopromat_dlya_chaynikov_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4203/4203180_obuchayuschee_video_dlya_detey_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4200/4200035_muy_edem_edem_edem_v_dalekie_kraya_mp3_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000244c2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244C2 3556 bytes
font_01_sfnt_off00025245.bin
4da078b1a9ac9939bd4487762201093992b0619e019fb0f8d64f0022876efe67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25245 14212 bytes
font_02_sfnt_off00027eed.bin
151145a607267afee5d2f04443e754f03470c17d02dc0f3c125d2f2d1680d253		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EED 14468 bytes
font_03_sfnt_off0002a9a1.bin
3902396354e459e6464d369e2b9015d9abd4b5566b6c53903881faf1145250af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9A1 7296 bytes
font_04_sfnt_off0002bf0b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF0B 6084 bytes
font_05_sfnt_off0002cea0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEA0 3752 bytes

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