Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e3b2c63c734e128…

MALICIOUS

PDF

185.4 KB Created: 2015-07-25 11:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3c3b436695b9b18eea826e5acf3caeea SHA-1: fc8a239f27803c75c3bb6305c646d97faf49ae7a SHA-256: 0e3b2c63c734e1289a6a7baefaf1ef37b65adad0c3f8691f18f238104cb1c789
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a known malicious redirector. The ML classifier also strongly indicates maliciousness. This suggests the document is designed to lure users to a malicious site, likely for phishing or to download further malware. No scripts were extracted, but the presence of a malicious URL 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B4%D0%BE%D0%BF%D0%BE%D0%BB%D0%BD%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5+%D0%BC%D0%B0%D1%82%D0%B5%D1%80%D0%B8%D0%B0%D0%BB%D1%8B+%D0%B4%D0%BB%D1%8F+sims+3&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197218_biznes_plan_proektnoy_organizacii_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185118_ufo_aftershock_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197859_sims_2_17_v_1_skachat_torrent_besplatno_dlya_windows_7.pdf
    • http://www.microsoft.com/typography/fonts/You
    • http://www.microsoft.com/typography/fonts/

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a73e.bin
4eafe80d1cc4702c08a4b1e346fec5490e651fdd5d0c9856f3628d16f27bcfbb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A73E 7100 bytes
font_00_sfnt_off000242a2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242A2 3556 bytes
font_01_sfnt_off00025025.bin
2c9e1146dc3ef23f5eadc563ba6af76fe1dab6d2ce6ed2a656a18c363c335555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25025 14056 bytes
font_02_sfnt_off00027c1e.bin
3188666731a98c2ab5224774461413b43cd058dafc4cf8656f1722c9bdc44756		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C1E 14632 bytes
font_04_sfnt_off0002bbe3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BBE3 6084 bytes
font_05_sfnt_off0002cb78.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CB78 3752 bytes

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