Malicious PDF — malware analysis report

Static analysis result for SHA-256 16a48423fd1afc5a…

MALICIOUS

PDF

188.4 KB Created: 2015-07-24 01:08:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e46823cda51d09b08ad58887a8c8c104 SHA-1: d1bae0ca1600a168d9b76be279ec81cf2100ecbb SHA-256: 16a48423fd1afc5ace34192c6f1f48b151225f0d061c9cceeb27a7e625408dc7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, likely serving as a lure to download a secondary payload or conduct phishing. 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-8785753-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8785753-0
  • 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=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+152+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B1%D0%B5%D0%B7+%D0%B2%D0%B8%D1%80%D1%83%D1%81%D0%BE%D0%B2&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185018_skachat_nba_2k14_cherez_torrent_na_pc_na_russkom.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185268_aim_na_varfeys_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184421_obrazec_zayavleniya_na_uderzhanie_iz_zarabotnoy_platuy.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_off00024a92.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A92 3556 bytes
font_01_sfnt_off00025815.bin
270d51ef4529c0bec2ad1bb1832dd0b4740c5e47561c725aa524608c341eba78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25815 14996 bytes
font_02_sfnt_off000286ac.bin
d09923cbdc305950305c98b16fd731505617ef87fa48d967c0f3dc823af7b848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x286AC 14640 bytes
font_03_sfnt_off0002b1df.bin
1de25137aa83964b729b2ddab5ce43701ca3e378fa9c6a9ff9f0ba2a899f22ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1DF 7404 bytes
font_04_sfnt_off0002c7b1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C7B1 6084 bytes
font_05_sfnt_off0002d746.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D746 3752 bytes

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