Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4bb6b12f2408a50…

MALICIOUS

PDF

187.9 KB Created: 2015-07-25 06:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d7e8da16ddf48e920032d95a9a815cec SHA-1: fb56d8d6fc43ae6ba4c4a7bf5028c7aade914697 SHA-256: a4bb6b12f2408a503371dfbf483ef13017a89569b85642422e5f64af928f74ee
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The URL suggests a lure related to downloading a game, likely a phishing or malware distribution attempt. No scripts were extracted, but the presence of the malicious link is a strong indicator of malicious intent.

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=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+1+5+2+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185126_final_fantasy_9_pc_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4198/4198330_skachat_brauzer_belka_na_android.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4195/4195505_kassandra_klyer_gorod_praha_fb2_skachat_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024a92.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24A92 3556 bytes
font_01_sfnt_off00025815.bin
3c038f5ac3f926a582f27d07ee9cd7d336e76039cc7b7171491f1d174a9a5bd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25815 14676 bytes
font_02_sfnt_off0002858a.bin
d09923cbdc305950305c98b16fd731505617ef87fa48d967c0f3dc823af7b848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2858A 14640 bytes
font_03_sfnt_off0002b0bd.bin
0d36160a57aa59a11dbbb3e976180c7be2e03719ecad06b4607af16ba9efcf52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B0BD 7172 bytes
font_04_sfnt_off0002c5cd.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5CD 6084 bytes
font_05_sfnt_off0002d562.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D562 3752 bytes

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