Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e91e2540d9aaa0…

MALICIOUS

PDF

185.3 KB Created: 2015-07-24 11:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ba2279e745e2bdfc62a59c97335cb5de SHA-1: ce41182a356bf3c5aecd515d8b87aa24b420ae05 SHA-256: a8e91e2540d9aaa06c11c8d79413ad019a3f26e175cb05e3fa51e4c4431b62da
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This indicates the document is likely part of a phishing or malware distribution campaign. The embedded URL http://botcraftman.ru/?lip&keyword=%D0%B0%D0%B2%D1%8B%D1%80+%D1%81%D1%83%D0%B7%D0%BB%D1%8D%D1%80+%D1%8D%D0%B9%D1%82%D0%B5%D0%BF+%D1%83%D0%BF%D0%BA%D1%8D%D0%BB%D1%8D%D1%82%D0%bc%D1%8D+%D1%82%D0%B5%D0%BA%D1%81%D1%82+%D0%BF%D0%B5%D1%81%D0%BD%D0%B8&charset=utf-8 is the primary indicator of malicious intent. No scripts were extracted from this sample.

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%B0%D0%B2%D1%8B%D1%80+%D1%81%D1%83%D0%B7%D0%BB%D1%8D%D1%80+%D1%8D%D0%B9%D1%82%D0%B5%D0%BF+%D1%83%D0%BF%D0%BA%D1%8D%D0%BB%D1%8D%D1%82%D0%BC%D1%8D+%D1%82%D0%B5%D0%BA%D1%81%D1%82+%D0%BF%D0%B5%D1%81%D0%BD%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185453_obrazec_otcheta_na_1_kategoriyu_rentgenolaboranta.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4189/4189524_50_ottenkov_serogo_skachat_knigu_besplatno_fb2.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187183_arcon_2012_skachat_besplatno_na_russkom_yazuyke_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024253.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24253 3556 bytes
font_01_sfnt_off00024fd6.bin
f4dd29700f636ac78e68a400e52faff8bae9a41b3a88289f4bea1e9af1728ceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FD6 14484 bytes
font_02_sfnt_off00027dab.bin
1a803d94510109e1c0ca4497b007617bc54bc3871f99963dd6d053fab28c84d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27DAB 14468 bytes
font_03_sfnt_off0002a85f.bin
ee2f52542a34f1dfb935b17a0d5a4e1765fb8e47517d00fab1898c8f86e06ed7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A85F 6608 bytes
font_04_sfnt_off0002bb4b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB4B 6084 bytes
font_05_sfnt_off0002cae0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAE0 3752 bytes

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