Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0f4db13c969961…

MALICIOUS

PDF

185.6 KB Created: 2015-08-08 09:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d6ea330cfbf6c85a168157f62293f0b2 SHA-1: 683fb6cd5aab8afe5e09cead5eea2e83c9aa3dbe SHA-256: 3d0f4db13c96996139f92f6f663a25606ff36c52ae5a43aa97f812de80a1d21b
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 is likely the primary mechanism for delivering a malicious payload or directing the user to a phishing site. No scripts were extracted from this sample.

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%81%D0%B2%D0%B0%D1%82%D1%8B+2+%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://img1.liveinternet.ru/images/attach/c/6//4383/4383805_skachat_warhammer_40000_fire_warrior_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384259_nokia_n8_proshivka_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383903_kveyk_4_skachat_torrenta.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024301.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24301 3556 bytes
font_01_sfnt_off00025084.bin
95317637f3ac9c1b02d47b5dad3340d18763700e03b42f8fc54f92beb40f0843		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25084 15112 bytes
font_02_sfnt_off00027f51.bin
a8c28ff59a65b28ee09e50dd1c7720660447add6a998d01502f877442c6e77ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F51 14468 bytes
font_03_sfnt_off0002aa03.bin
a8dec4e4e56b0dffb09bfbbe70a40d5dfb62298817c0e593cf315ea183e2663b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA03 6488 bytes
font_04_sfnt_off0002bc78.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC78 6084 bytes
font_05_sfnt_off0002cc0d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC0D 3752 bytes

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