Malicious PDF — malware analysis report

Static analysis result for SHA-256 38640fae8ec871ac…

MALICIOUS

PDF

186.2 KB Created: 2015-07-24 11:21:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b8895dd44d4f7f4e1e0f91460d2bf22e SHA-1: d819bd9cdba559b81d86b6cdb935783c73a708d6 SHA-256: 38640fae8ec871acf709e75c0a03206e13fd40d8987e0a30aab35efb77ce7b40
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 likely intended to lead the user to a site hosting malware or phishing content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded link is sufficient evidence of a malicious redirection attempt.

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=corel+videostudio+pro+x5+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%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//4192/4192007_radio_record_russian_mix_2014_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184827_nyensi_dryu_prizrak_pomestya_tornton_na_russkom_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183192_kusudama_roza_shema.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a8bf.bin
2f179eec67e01f343bb9c661bf459c50f0d415b4af81a574a2d5b945efe2aef2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A8BF 7536 bytes
font_00_sfnt_off00024242.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24242 3556 bytes
font_01_sfnt_off00024fc5.bin
7a2480446882774aa06f66460140b1b882873f9290be0f7a753be35adee75dd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FC5 14492 bytes
font_02_sfnt_off00027ca9.bin
485ac624a3f0ddaecb1fd5a16153ebf52fc0920d0e500394a1b71e0ff24ad79f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CA9 15084 bytes
font_04_sfnt_off0002bef4.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEF4 6084 bytes
font_05_sfnt_off0002ce89.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE89 3752 bytes

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