Malicious PDF — malware analysis report

Static analysis result for SHA-256 58834a04455c94f3…

MALICIOUS

PDF

378.2 KB Created: 2015-08-22 08:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b4d0339a9850cb689e305c4e41c2ef73 SHA-1: a5ad16489367f87770381a4b18bb8a516a6d745a SHA-256: 58834a04455c94f346fa938d3c61c1af5d3d71cff71bb0c6b0b5dcbec5df7e03
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 infrastructure. The ML classifier also flagged this PDF with high confidence. The primary malicious indicator is the embedded URL, which is likely used to lure the user to a site for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D0%BB%D1%83%D0%BD%D1%82%D0%B8%D0%BA+%D1%83%D1%87%D0%B8%D1%82+%D1%86%D0%B8%D1%84%D1%80%D1%8B+%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://img0.liveinternet.ru/images/attach/c/6//4674/4674463_skachat_igru_garrys_mod_13_s_modami_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674470_kod_registracii_dlya_dead_space_1.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674459_skachat_zumu_besplatno_na_kompyuter_bez_ogranicheniya_vremeni.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a1fe.bin
61edf78cdb7b92d031d91d2ab216bc6438a2ed57f1cd1d6278548f3ca4143e2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1FE 8324 bytes
font_01_sfnt_off0005b9fa.bin
198aa186e5b473c2f6c6d100c69965451e35eaa4fe8de42a725320033dd6fa35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9FA 15660 bytes

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