Malicious PDF — malware analysis report

Static analysis result for SHA-256 8da7619a19893ce7…

MALICIOUS

PDF

185.8 KB Created: 2015-07-24 15:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d10af1d06cd963b00338a000ec41c7b7 SHA-1: 9dba2bb226d4de940c6cf5ed8b51f3cc1fbe9bb4 SHA-256: 8da7619a19893ce7875edbe215b53db672ecbcb41937e52ae55cf57741639429
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to botcraftman.ru. This suggests the document's primary purpose is to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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=%D0%BC%D0%BE%D0%B9+%D0%BC%D1%83%D0%B6+%D0%B8%D0%BD%D0%BE%D0%BF%D0%BB%D0%B0%D0%BD%D0%B5%D1%82%D1%8F%D0%BD%D0%B8%D0%BD+%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://img0.liveinternet.ru/images/attach/c/5//4190/4190032_skachat_klipuy_mp4_320_240.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184877_chit_koduy_na_vormiks.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191176_skachat_norton_360_na_180_dney_besplatno_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243b9.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243B9 3556 bytes
font_01_sfnt_off0002513c.bin
b61c8a9fc8b271fca04d3ecb245d6c6d79f68ae379c3f300aaed640616f07cbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2513C 14552 bytes
font_02_sfnt_off00027ee5.bin
fbe4af72ea4b6832e02f3a94d39805fe74296d1f62d5d4f3c350b4dd983b7d89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27EE5 14468 bytes
font_03_sfnt_off0002a993.bin
9f88893f5071491688c06626404222a1db6feedc2e9ed597d678533cab2008f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A993 6860 bytes
font_04_sfnt_off0002bd50.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD50 6084 bytes
font_05_sfnt_off0002cce5.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCE5 3752 bytes

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