Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e21af347aa1b7c…

MALICIOUS

PDF

184.6 KB Created: 2015-07-24 12:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e55ea216942a294d7e18c6ae9f8be1b8 SHA-1: f4122543ceff53c76048e26609192e15905dd3ef SHA-256: 37e21af347aa1b7c38df13cd955c132dedeb1b935e9582c4ff5d32df8983fe97
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be redirecting the user to the specified URL, which is likely hosting a phishing page or distributing further malware.

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%8E%D1%82%D1%83%D0%B1+%D0%BD%D0%B0+%D0%BD%D0%BE%D0%BA%D0%B8%D0%B0+5800&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192353_peresuyhayuschee_ozero_indridason_arnold.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190548_igru_zombi_protiv_rasteniy_2_cherez_torrent_na_russkom.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191009_programma_raspoznavaniya_rechi_dlya_android.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f2f.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F2F 3556 bytes
font_01_sfnt_off00024cb2.bin
09156cf08f8e3802fe45f1452bcbafa4b80ef6b801d55451435158449393c3d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CB2 14560 bytes
font_02_sfnt_off00027a5c.bin
859ece8b7612d0e776369d21c548803c9ac78664385f74302527d7f9525bd5c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A5C 14640 bytes
font_03_sfnt_off0002a58c.bin
eba3669241cd937be1468e619c7db8eb2b063193b459e1c0aa2774536a456ea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A58C 6652 bytes
font_04_sfnt_off0002b896.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B896 6084 bytes
font_05_sfnt_off0002c82b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C82B 3752 bytes

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