Malicious PDF — malware analysis report

Static analysis result for SHA-256 818ca18f0f796386…

MALICIOUS

PDF

186.7 KB Created: 2015-07-24 19:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: de89bc91f510dfc8f8d1cd70455099c4 SHA-1: 767d8046e6d53b1f22b3dc99f114838af2f23b4d SHA-256: 818ca18f0f796386cf46dd3f4753d043911800ecca215e75c0f22d6d139a4673
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL points to 'botcraftman.ru', which is flagged as malicious. This suggests the document's primary purpose is to lure the user to this malicious site, likely for phishing or to download further malware. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8741551-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8741551-0
  • 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%B8%D0%B3%D1%80%D1%83+%D0%BE%D0%BC%D1%81%D0%B8+2+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%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/5//4192/4192020_skachat_kontr_strayk_besplatno_na_kompyuter.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185450_skachat_igru_dmc_devil_may_cry_2_cherez_torrent_na_pc.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189595_stroitelnuye_uzluy_v_avtokade.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246a4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246A4 3556 bytes
font_01_sfnt_off00025427.bin
cda13d44923f1794cb5a4705c1cb1be442bbfd5ef06caa6f32a5e869b3c38c66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25427 15000 bytes
font_02_sfnt_off00028272.bin
1bdb34460530df544f3708516b9bff2a8899c1e4c5605cca86f0484fc167616c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28272 14468 bytes
font_03_sfnt_off0002ad24.bin
c9c92827f6bfef0491e60d63725f277dc3aec2e3886f5428ba47107dcd5d9a15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD24 6884 bytes
font_04_sfnt_off0002c128.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C128 6084 bytes
font_05_sfnt_off0002d0bd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0BD 3752 bytes

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