Malicious PDF — malware analysis report

Static analysis result for SHA-256 c27c3c33006669a4…

MALICIOUS

PDF

185.6 KB Created: 2015-07-28 15:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: cda7fd56bfac023c329d5a38847f52d0 SHA-1: 81ee8a91177a474a21b2daff613b76f4722cb0fe SHA-256: c27c3c33006669a4e73c10dc0d93a0a9427f7c9061199b71c7be6e5004cf27a9
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 critical heuristic indicating a link to known malicious redirector infrastructure. The primary malicious IOC is the URL http://botcraftman.ru/, which is likely used to direct users to a malicious site. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure.

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+%D1%81%D0%BA%D0%B0%D0%B9%D0%BF+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4196/4196261_abbyy_finereader_10_home_edition_klyuch_aktivaciizip.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4219/4219079_skachat_flashtool_dlya_windows_7_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191464_skachat_serial_belaya_koroleva_2_sezon_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000242e2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x242E2 3556 bytes
font_01_sfnt_off00025065.bin
a44c74667c3cbdd52a7087a60fe54f1494ea8fd4a2bdf0694228da4d5c708d9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25065 15180 bytes
font_02_sfnt_off00027f3f.bin
c33e6903d76079777c1b082a355654bfa5653b97afd40bc3e5344b34556d24bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F3F 14468 bytes
font_03_sfnt_off0002a9f1.bin
7360a403b6e8da65997005d4eeb323b9da1d9bbde9531eae298d284e32915fa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9F1 6516 bytes
font_04_sfnt_off0002bc75.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC75 6084 bytes
font_05_sfnt_off0002cc0a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC0A 3752 bytes

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