Malicious PDF — malware analysis report

Static analysis result for SHA-256 25f418d5a9bb493f…

MALICIOUS

PDF

347.9 KB Created: 2015-08-22 09:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1ce207bed45743c1e595bc8589006f53 SHA-1: e23ff48d926a55a9aa9215021c2c55e22a597640 SHA-256: 25f418d5a9bb493fc81e4c9bda0001097e9f559e29448857a0fccb0e1c6238b9
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=call+of+duty+3+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BE%D0%B4%D0%BD%D0%B8%D0%BC+%D1%84%D0%B0%D0%B9%D0%BB%D0%BE%D0%BC&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674496_audiokniga_zahar_berkut_ivan_franko_slushat_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674487_bonus_kod_world_of_tanks_2015_na_noyabr.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674593_skachat_serial_molodezhka_2_sezon_vse_serii_cherez_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005232e.bin
26f7a2c298f932e0d14402a19915bcd25bba2020247c266ce9595a7602536f6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5232E 9508 bytes
font_01_sfnt_off00053e29.bin
aff6d31bde755c645734ac7f44f8f433e04c712e9c8005780621b39c3e6cdb93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E29 16364 bytes

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