Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd82c0e8210da783…

MALICIOUS

PDF

186.4 KB Created: 2015-07-23 21:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a7c9bf583e42fe7e77890e86ab82dd3c SHA-1: cbc4b26c9c4f61abd456417c9d9d152fd054b2c0 SHA-256: fd82c0e8210da7833d7fa86fb3aa68429d71facb0683015d460d7541fb234ef4
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a lure for phishing or malware delivery. No scripts were extracted, and the document body was not parsable.

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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+proshow+gold+7+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184730_si_sharp_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184688_vzlom_igruy_injustice_na_ios.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184374_skachat_igru_alien_shuter_nachalo_vtorzheniya_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a980.bin
f811812e584e1223a0ee27730e962a4e681abd4e446a8e132b7b73f8a1719f63		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A980 7576 bytes
font_00_sfnt_off0002444e.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2444E 3556 bytes
font_01_sfnt_off000251d1.bin
b32a059fcdad09627e89cc4f0932078d788c9e5793889c60f488efb4ed24ecac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251D1 14148 bytes
font_02_sfnt_off00027e40.bin
50ea0e5532dad792cfd3d4457ef918b09c33a914d034e2b4624aed2c4f87aa7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27E40 14684 bytes
font_04_sfnt_off0002bfd2.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFD2 6084 bytes
font_05_sfnt_off0002cf67.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF67 3752 bytes

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