Malicious PDF — malware analysis report

Static analysis result for SHA-256 4249fe5bc9eddb20…

MALICIOUS

PDF

185.0 KB Created: 2015-07-23 20:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f74c228c3d3cd2de93b8ae189be0fe11 SHA-1: 768535a1e4effd47fa1560a4ab7939a2f18366b7 SHA-256: 4249fe5bc9eddb205572de4d2c095caa5978f32076c7bd98849c83b309656ac5
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is indicative of a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was not parsable text.

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%BC%D0%B0%D1%85%D0%B0%D0%B1%D1%85%D0%B0%D1%80%D0%B0%D1%82%D0%B0+%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//4184/4184482_skachat_klyuch_dlya_windows_7_sborka_7601.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184631_rus02192012nm3_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184612_skachat_minecraft_1_5_2_exe.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002420c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2420C 3556 bytes
font_01_sfnt_off00024f8f.bin
0190463c766056235d2c6c40319db682a0175326ef888abe052b0012b0f59ef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F8F 14800 bytes
font_02_sfnt_off00027d6f.bin
858de1ea0edee6589051d6c5805376be02fce034b392ea3476abe13984ffa707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D6F 14532 bytes
font_03_sfnt_off0002a85c.bin
4e8ac15f9cddb42dcce2a77e4afdba7ad1a1017495db2e10f20e43f52f729afa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A85C 6360 bytes
font_04_sfnt_off0002ba5e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA5E 6084 bytes
font_05_sfnt_off0002c9f3.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9F3 3752 bytes

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