Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07e80bc74c19faf…

MALICIOUS

PDF

186.3 KB Created: 2015-08-08 12:15:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2c4f948e576f2027fe34d472a19d03de SHA-1: 76a1d9746b59ab2c614d24f1ce7c5b8adfba4c16 SHA-256: e07e80bc74c19fafd21ae2924c71cc8712b5e6403997f2c6a228ddd38103a1d3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirectors. No scripts were extracted, and the document body was truncated and unreadable, but the presence of the malicious link is sufficient evidence 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=amaranthe+%D0%B4%D0%B8%D1%81%D0%BA%D0%BE%D0%B3%D1%80%D0%B0%D1%84%D0%B8%D1%8F+%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/6//4386/4386317_webcam_monitor_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387645_zvuk_perforatora_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388819_ne_zapuskaetsya_fifa_13_na_windows_xp.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024026.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24026 3556 bytes
font_01_sfnt_off00024da9.bin
0e67b94cf5afcdd352e56d4eba916be03994bc57f177c35976850f4e79431382		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DA9 15872 bytes
font_02_sfnt_off00027e79.bin
8cc68aec1c823ff525d13867f68404517e796a47f965830085f5ce02e613f3f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E79 14844 bytes
font_03_sfnt_off0002aa23.bin
522b84abd0c33f11dd2088c3cfbb26fe6dffaae99bb7153662370c8d3ee565e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA23 7268 bytes
font_04_sfnt_off0002bf57.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF57 6084 bytes
font_05_sfnt_off0002ceec.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEEC 3752 bytes

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