Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef5802a580a43dc7…

MALICIOUS

PDF

187.5 KB Created: 2015-08-05 22:36:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a959280557755aa130e2f974611ef433 SHA-1: c279f0acfcc59c5088a71fb6e18312907660736b SHA-256: ef5802a580a43dc7326a0bd8a7a4e36c8bed4bb1fef7222417e66e4df6e54a66
90 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link to 'http://botcraftman.ru/'. This URL is likely used to lure the user to a malicious site for phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BA%D0%BE%D0%B4+%D0%BE%D0%BA%D1%82%D0%BC%D0%BE+%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%BE%D0%B4%D0%B0%D1%80&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4307/4307120_skachat_videoadapter_dlya_windows_7.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305756_skachat_igruy_na_telefon_mts_960_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306489_skachat_film_mech_2_sezon_cherez_torrent_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024b6d.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B6D 3556 bytes
font_01_sfnt_off000258f0.bin
2504b08b636ddff9b6b65e6de9d86acba2379cfff2c2f31fc4d2594c3ede3896		 pdf-font-stream PDF embedded font (sfnt) at offset 0x258F0 15024 bytes
font_02_sfnt_off00028838.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28838 14468 bytes
font_03_sfnt_off0002b2eb.bin
1f793b669543349fb96d3f69c526c888670e03f6c1b444324d5fc73c404c4a83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B2EB 6132 bytes
font_04_sfnt_off0002c408.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C408 6084 bytes
font_05_sfnt_off0002d39d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D39D 3752 bytes

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