Malicious PDF — malware analysis report

Static analysis result for SHA-256 20d55b8733fbb72c…

MALICIOUS

PDF

183.4 KB Created: 2015-07-24 01:10:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e61c2f4bac69750e8600c90d33c90d02 SHA-1: 1cd41efa7e25f8a562336dd27c77f6bafa4abeb2 SHA-256: 20d55b8733fbb72c832da8e14c21b677f5c7bde4f1e3c7d11f9dbf47d92328ef
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This indicates a phishing or social engineering attempt to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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=Guardant+key+dumper&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184558_skachat_fl_studio_11_na_russkom_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184491_maykrosoft_ofis_2010_skachat_besplatno_russkaya_versiya_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185469_pravo_voploschenie_spravedlivosti_i_dobra.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023a2c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23A2C 3556 bytes
font_01_sfnt_off000247af.bin
0f199c93bb1643f5324de2c0c9ab4b90f4e6798e0d23afc00074feed2a1a8fde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x247AF 15020 bytes
font_02_sfnt_off00027618.bin
ad4e5674ca3bf1631b43b9a125802760b95016b4403f28d91ab3bae08ea39374		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27618 14892 bytes
font_03_sfnt_off0002a21a.bin
0d59a80f827d4de0c1639c1416fe34149df6b89b53a57a8858b10c409d2684ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A21A 6280 bytes
font_04_sfnt_off0002b3dd.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B3DD 6084 bytes
font_05_sfnt_off0002c372.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C372 3752 bytes

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