Malicious PDF — malware analysis report

Static analysis result for SHA-256 d570df993eb91b5a…

MALICIOUS

PDF

186.1 KB Created: 2015-07-23 19:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 339305f23386b0be1c73cb98026597b9 SHA-1: 4ad6d931390a8e9e64c36a665ce827ac25d3df4c SHA-256: d570df993eb91b5ae7b4ad8ed095e9dab945cf2fd1d55248b80dc2756b70f444
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

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=hp+laserjet+p1102+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80+%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://img1.liveinternet.ru/images/attach/c/5//4183/4183181_kuryatnik_shema.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183243_urok_3.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183249_proekt_po_fizicheskoy_kulture.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a7e5.bin
20f3f638e2861d5d69a48e48b0e516d2b78ac08489c3b660af2bb6ce61173153		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A7E5 7712 bytes
font_00_sfnt_off00024071.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24071 3556 bytes
font_01_sfnt_off00024df4.bin
32deba60ab9df28f506c9a4a7253a2d9a54eb4c02be4e95bae80b38f7c242495		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24DF4 15132 bytes
font_02_sfnt_off00027c69.bin
93dde1651ae3846c7ba0bdafcf30f6b1e90811fcd41475103c22394b6e951609		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C69 14728 bytes
font_04_sfnt_off0002beb5.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEB5 6084 bytes
font_05_sfnt_off0002ce4a.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE4A 3752 bytes

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