Malicious PDF — malware analysis report

Static analysis result for SHA-256 1255238074600add…

MALICIOUS

PDF

366.8 KB Created: 2015-08-21 09:19:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9076c5b3b2e630b8e72d180eb802133b SHA-1: 7b3d5060a82ba324a20c3d585c20d7c5cec3b0c1 SHA-256: 1255238074600addf2f171d0a967d7e325d97178a6dcf965abc9145e6c486bb8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. This suggests the document is designed to lure users to a malicious site, likely for phishing or to initiate a malware download. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%80%D0%B5%D0%B7%D1%83%D0%BB%D1%8C%D1%82%D0%B0%D1%82%D1%8B+%D0%B5%D0%B3%D1%8D+%D0%BF%D0%BE+%D0%B8%D1%81%D1%82%D0%BE%D1%80%D0%B8%D0%B8+2015+%D0%BE%D1%80%D0%B5%D0%BD%D0%B1%D1%83%D1%80%D0%B3%D1%81%D0%BA%D0%B0%D1%8F+%D0%BE%D0%B1%D0%BB%D0%B0%D1%81%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654730_skachat_chit_na_tdp4_proekt_tmuy_na_keshi_i_monetuy_exe.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654752_egye_po_istorii_2015_podgotovka.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654697_ts4exe_skachat_dlya_sims_4.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056ed1.bin
85c760b707f1d7f906c7ceaba9fb1e181eabe81fac7ff9707ec5702d43038e8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56ED1 9772 bytes
font_01_sfnt_off00058b06.bin
f07455553addd87e3fe2bdcf3eeedf8957e84f988ebdb3783e85fe697153739f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58B06 15780 bytes

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