Malicious PDF — malware analysis report

Static analysis result for SHA-256 45dbe5c184192f94…

MALICIOUS

PDF

186.4 KB Created: 2015-07-24 11:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1fda24cd848cf8dc251c7bff48f2fb45 SHA-1: 27fa0d4ab0cbdcff89f384f20c9fe41774b485ca SHA-256: 45dbe5c184192f94b72300a40f715f7510b620364624272b6dbef3839e5e9b5e
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, botcraftman.ru, which is flagged by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly indicates maliciousness. The embedded content appears to be obfuscated or corrupted, preventing a deeper analysis of its specific intent beyond the redirection. 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=solidworks+2015+sp40+premium+edition+%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://img1.liveinternet.ru/images/attach/c/5//4185/4185554_mac_os_x_109_skachat_torrent_iso.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191210_skachat_sbornik_radio_vanya_cherez_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188629_yandeks_navigator_dlya_windows_ce_60_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a87f.bin
c0b2c01c430f1ff82f0d056192052571c64b72f6743e57fdc8b2b5a95d6e5528		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A87F 7812 bytes
font_00_sfnt_off00023fed.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23FED 3556 bytes
font_01_sfnt_off00024d70.bin
7239fbd6535ffe0925fc7b72a52040143ea405e9a6e8a32a983e4937de9c76bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24D70 14848 bytes
font_02_sfnt_off00027b94.bin
c12c403a895e8a7451b9a6eb1f55c92dea04a6f929b3445647c08c306341a900		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B94 15204 bytes
font_04_sfnt_off0002bfa8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFA8 6084 bytes
font_05_sfnt_off0002cf3d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF3D 3752 bytes

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