Malicious PDF — malware analysis report

Static analysis result for SHA-256 2878fd50fe5a333d…

MALICIOUS

PDF

185.9 KB Created: 2015-07-24 11:15:55 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c5a43578430709266e23642aead2a427 SHA-1: dc3f0cd9bb9dc90a4fe3e4359c642d53e0c5fe6b SHA-256: 2878fd50fe5a333d2054128101587383d4719959db0aac88a48cbb1cc7e80426
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Dropper.Agent-8786182-0' further supports its malicious nature. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8786182-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8786182-0
  • 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=radio+record+russian+mix+2014+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184290_razrabotka_urokov_v_nachalnuyh_klassah_v_uzbekistane.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190739_perevod_teksta_s_kartinki_s_angliyskogo_na_russkiy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184562_vuyyti_zamuzh_lyuboy_cenoy_skachat_besplatno_fb2.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a73b.bin
e13daf6120a191f1d6eb8d2698121f16b78294b2d33d08a2fee192251779172d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A73B 7652 bytes
font_00_sfnt_off00023f2f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F2F 3556 bytes
font_01_sfnt_off00024cb2.bin
b47b3ae99b3810c2c39418232f521a13b037e476bc2534779c5775e5d35e456f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CB2 15300 bytes
font_02_sfnt_off00027bd7.bin
31b5b37149d863d142633f8d28c879b10d740ec1f06837d70df3b32a67ea421b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27BD7 14700 bytes
font_04_sfnt_off0002bdc9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDC9 6084 bytes
font_05_sfnt_off0002cd5e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD5E 3752 bytes

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