Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd5997a1d0a2e70…

MALICIOUS

PDF

187.1 KB Created: 2015-07-25 03:05:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: bfc053376f2ed72897bb5187b3440633 SHA-1: daec1e0857624895e1f7a425fb742eea7c639b48 SHA-256: 5fd5997a1d0a2e708ac1435f3fc4157f1702e44884d21863e3902b20e3412e60
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by multiple heuristics as malicious, specifically for containing a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/, is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware download site. No scripts were extracted, but the presence of the malicious URL is sufficient evidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%B0%D0%B9%D0%BA%D1%80%D0%B0%D0%B2%D1%82+%D1%83%D1%81%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%BA%D1%83+125+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184495_uroki_po_russkomu_yazuyku_5_klass_laduyzhenskaya_fgos.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188279_gta_4_ps3_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192264_shablonuy_dlya_prezentaciy.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002458f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2458F 3556 bytes
font_01_sfnt_off00025312.bin
df43d0df8514ed8853ef76d45c77717fff903eceeb3cc22f1986d86e30c13e97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25312 15476 bytes
font_02_sfnt_off000282d0.bin
4406a7a2f965d281afeccd16d1ba545bf2ad710598c38302ac51af21ece4f487		 pdf-font-stream PDF embedded font (sfnt) at offset 0x282D0 14640 bytes
font_03_sfnt_off0002ae03.bin
86038c6afbdcc308bceddbf5325394dc0cf2ff2b53b297090c37459e9025b015		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE03 7056 bytes
font_04_sfnt_off0002c2a7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2A7 6084 bytes
font_05_sfnt_off0002d23c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D23C 3752 bytes

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