Malicious PDF — malware analysis report

Static analysis result for SHA-256 91df197fd011628b…

MALICIOUS

PDF

185.2 KB Created: 2015-07-24 04:33:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 98b8c8db89eb406c5e8c08fa091e856d SHA-1: 36ab434a96bae45e80abb7cde87d4101e7f4060c SHA-256: 91df197fd011628b56de0bd7f415e52d107b848b3e577753aeaa80347405c2de
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 at http://botcraftman.ru/. This suggests the document is designed to lure users to a malicious website, likely for phishing or malware delivery. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81%D0%B8%D0%BC%D0%BF%D1%81%D0%BE%D0%BD%D1%8B+20+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185534_hodyachie_mertvecuy_1_sezon_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184944_obschie_bani_v_germanii_foto_video.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184854_programma_dlya_skachivaniya_muzuyki_s_kontakta_na_android.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002416a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2416A 3556 bytes
font_01_sfnt_off00024eed.bin
ced4deb37d88f8b35a11909c267affa7e5f35144943cab133357ff496fd22c14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24EED 14632 bytes
font_02_sfnt_off00027cd5.bin
f332f630edb11f2652521b1ca682850710077f109e9c98e99461c31fd4619328		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CD5 14468 bytes
font_03_sfnt_off0002a78b.bin
787109b2fa4580aca87e64da86ba4c9e47bfdd49b7ca90e470fd7ddfc7e4f241		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A78B 6780 bytes
font_04_sfnt_off0002bb0a.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB0A 6084 bytes
font_05_sfnt_off0002ca9f.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA9F 3752 bytes

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