Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b03c061fd0e0071…

MALICIOUS

PDF

364.6 KB Created: 2015-08-22 11:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f3ebf42c5252f85242395b8c05f17204 SHA-1: 49a0b0799c4108f45221b7cb07b74a4118cfada5 SHA-256: 7b03c061fd0e0071e40ed83fc63698c517c3d6f542bc353c35d5e855f4545c34
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of a malicious URL is a strong indicator of malicious intent, likely to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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=padi+open+water+diver+%D1%83%D1%87%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+pdf&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4675/4675854_garmin_dlya_windows_ce_60_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674842_skachat_fanfiki_na_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4675/4675172_zvuk_pip_cenzura_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000563e1.bin
989ced15d5b7c57fd33027759921bcf39283eef439e6a665c5a9341f70275148		 pdf-font-stream PDF embedded font (sfnt) at offset 0x563E1 9612 bytes
font_01_sfnt_off00057e89.bin
35b40f88e95efb64610bb61b375bbf4da1fd76e6d5d7f28c16f9b1c279a62ab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57E89 17080 bytes

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