Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4f5bc7c1848b33a…

MALICIOUS

PDF

187.4 KB Created: 2015-07-24 05:03:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d4679bd25155a7a9132e6acb1aa9809f SHA-1: f25b2a90bbe5b07e69a2c1cae7cf21c19e0d13ef SHA-256: d4f5bc7c1848b33a084e77d4b0c360c1ee1ff586566d660af82cf483fe898548
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirects. No scripts were extracted, but the presence of a malicious link indicates a likely phishing or malware delivery attempt.

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=poweramp+%D0%BF%D0%BE%D0%BB%D0%BD%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%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%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185221_koduy_dlya_tanki_onlayn_na_kristalluy_bez_skachivaniya.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187385_skachat_barbi_pokaz_mod_2_cherez_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185530_perevodnuye_yekzamenuy_v_7_klasse_po_matematike_2015.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000246c1.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x246C1 3556 bytes
font_01_sfnt_off00025444.bin
f27e0e6814e86daf79bb7c8b828761f1b0f376a966e9fdf809e02748bfb39a14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25444 14776 bytes
font_02_sfnt_off0002821a.bin
c452624cc50bef25e42beaa87546b11a40ceb2bb6cefb155edf21531d0efc4ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2821A 14844 bytes
font_03_sfnt_off0002ad95.bin
331d5675471eb41a2bc8e0c7a7c73549bf50dc17778d752b039e9fcb3620b846		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD95 7528 bytes
font_04_sfnt_off0002c39a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C39A 6084 bytes
font_05_sfnt_off0002d32f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D32F 3752 bytes

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