Malicious PDF — malware analysis report

Static analysis result for SHA-256 7279bf3886966b10…

MALICIOUS

PDF

187.1 KB Created: 2015-08-08 13:02:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 99dc7f5a31d40a681bf00d974e67ce96 SHA-1: d7917beec18082db63044300e63aa6b4da02a322 SHA-256: 7279bf3886966b10f6c37a284178c52a9af314a25b2bd4b042619fa8fe7053ff
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 is the primary indicator of malicious intent, likely serving as a lure for a phishing or malware download site.

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%94%D0%B0%D0%BD%D0%B8%D0%BB+%D0%B4%D0%B5%D0%BB%D0%B8%D1%87%D0%B5%D0%B2+%D0%BA%D0%B0%D0%BA+%D0%B2%D0%B5%D1%80%D0%BD%D1%83%D1%82%D1%8C+%D0%BC%D1%83%D0%B6%D0%B0+%D0%BE%D1%82%D0%B7%D1%8B%D0%B2%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4227/4227516_skachat_igruy_tri_v_ryad_besplatno_polnuye_versii_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385951_witcher_2_assassins_of_kings_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4390/4390744_gns3_skachat_na_russkom.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024613.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24613 3556 bytes
font_01_sfnt_off00025396.bin
9ee471df5e6a641ac86157f03231a6fbef1e736692fb6fe947fbc5780d8b087f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25396 15600 bytes
font_02_sfnt_off000283d3.bin
c457fcfaab6f548331a7572fefd0d96ae260c7787e9dff2b51ae1aa36573dbb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283D3 14468 bytes
font_03_sfnt_off0002ae82.bin
da5814f21476eabd9b9e4a4153ac57005bd9c8e21c3bdc3df289ba8baa624ade		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE82 6980 bytes
font_04_sfnt_off0002c2b8.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2B8 6084 bytes
font_05_sfnt_off0002d24d.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D24D 3752 bytes

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