Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad88e1b285440af…

MALICIOUS

PDF

186.2 KB Created: 2015-08-08 12:28:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 9bd86e5de0278ae57586555037875d39 SHA-1: 535d0905b0dc2eb1bdf063cd081636192da89a79 SHA-256: cad88e1b285440af6fab623284bf7d17b1397c875a13914f20b3f4cb3355ca2f
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. This indicates the document's primary purpose is to lure the user to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily truncated and unreadable.

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=napoleon+total+war+2+%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/6//4385/4385924_kompasyelektrik_express_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4387/4387318_intavir_instrukciya_po_primeneniyu.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388946_nfs_underground_2_skachat_torrent_repack_rus.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243a6.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243A6 3556 bytes
font_01_sfnt_off00025129.bin
5a509366b8ac29690b50539694d2e1a877e12894c8191e44cf894592e96528d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25129 14760 bytes
font_02_sfnt_off00027f22.bin
c0df5330971d04bc6a7262298d93a2e6e20b0ae79ed2e5adcef92220c3015079		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F22 14704 bytes
font_03_sfnt_off0002aaa7.bin
cd9a555c292bb2af5251ae3993ead5b3385bf83b9854347de2d14390af6096da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAA7 6980 bytes
font_04_sfnt_off0002beec.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEEC 6084 bytes
font_05_sfnt_off0002ce81.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE81 3752 bytes

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