Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d267a9e365ff5b…

MALICIOUS

PDF

189.1 KB Created: 2015-08-06 10:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cfd5d1d9a8eefd3c2c08d124c69ab026 SHA-1: 9c082c29b3cf05bce4230d54cefd15351e859139 SHA-256: b5d267a9e365ff5b951d89af1b9258aae4c15ee0f53cc53bf0955b8c5a953d7d
92 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful website. The ML classifier also flagged this PDF with high confidence. The embedded URL is the primary indicator of malicious intent, likely serving as a first stage for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0+%D0%B7%D0%B0%D1%87%D0%B0%D1%82%D0%B8%D1%8F+%D1%80%D0%B5%D0%B1%D0%B5%D0%BD%D0%BA%D0%B0+%D0%B6%D0%B5%D0%BB%D0%B0%D0%B5%D0%BC%D0%BE%D0%B3%D0%BE+%D0%BF%D0%BE%D0%BB%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4309/4309172_adobe_cs6_production_premium_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306850_demonstracionnuye_yeksperimentuy_po_fizike.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306022_phpmyadmin_sozdat_tablicu.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002503d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2503D 3556 bytes
font_01_sfnt_off00025dc0.bin
74593b8677f4d00bac6a5c574f9523ef6911f18d830cf788d709b782bfbf7e10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25DC0 15204 bytes
font_02_sfnt_off00028c39.bin
c457fcfaab6f548331a7572fefd0d96ae260c7787e9dff2b51ae1aa36573dbb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28C39 14468 bytes
font_03_sfnt_off0002b6e8.bin
81d013617f2f3bf943596961bfd37001818f958f3985c7c7cbf2feb03a4c0713		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B6E8 6884 bytes
font_04_sfnt_off0002caba.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CABA 6084 bytes
font_05_sfnt_off0002da4f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA4F 3752 bytes

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