Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e6093020855b3dd…

MALICIOUS

PDF

191.0 KB Created: 2015-08-05 13:52:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 37e0fb0ad5674fd1c1cd09cd78ce60a4 SHA-1: 8be2444114fd2de1445c6c7863e8d4f6b1de565b SHA-256: 5e6093020855b3ddfc387a0fec90176376e8caff11b9d5b8d753f1c6b15e561f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to a suspicious domain, likely serving as a lure to a malicious site. No scripts were extracted, but the presence of a malicious link is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BA%D0%B0%D1%80%D1%82%D0%B8%D0%BD%D0%BA%D0%B8+%D0%B4%D0%B5%D0%B2%D1%83%D1%88%D0%BA%D0%B8+%D1%81%D0%BE+%D1%81%D0%BF%D0%B8%D0%BD%D1%8B&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304687_skachat_hill_climb_racing_na_kompyuter_polnaya_versiya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304792_zapros_vuypiski_iz_egrp_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304651_olimpiadnuye_zadaniya_po_matematike_dlya_7_klassa_s_resheniyami.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_off000258b7.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x258B7 3556 bytes
font_01_sfnt_off0002663a.bin
18428a6e7223b2c26ff783a5a8d8b58824f65d91e6987d2b2b028c1963964f7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2663A 14924 bytes
font_02_sfnt_off00029424.bin
8c5e5bc4674cee60ec6c1619e60533ff44be00efca6b5f228c587d2f19a61a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29424 14520 bytes
font_03_sfnt_off0002bef3.bin
67b58de8ba0a214738b5abfff22e7d29a22938f4ec172be2fe0ed9abb1a3d1fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEF3 6696 bytes
font_04_sfnt_off0002d22e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D22E 6084 bytes
font_05_sfnt_off0002e1c3.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E1C3 3752 bytes

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