Malicious PDF — malware analysis report

Static analysis result for SHA-256 9303743c1a87aac5…

MALICIOUS

PDF

187.5 KB Created: 2015-08-05 13:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ef02b75cee264ef9c0ddbc394c2c6d58 SHA-1: 50b677bb0369553234e15d2996054fd1391e9c76 SHA-256: 9303743c1a87aac5ef216dfaa669064f1587b1e24c009118437bb73a786cf417
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector URL. This heuristic, combined with the ML classifier's high confidence, strongly suggests a malicious intent. The URL likely serves as a lure to download further malicious content or phish for credentials. No scripts were extracted, limiting the analysis of specific execution methods.

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+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%82%D0%BE%D1%80+%D0%B4%D0%BB%D1%8F+windows+8+%D0%BF%D1%80%D0%BE%D1%84%D0%B5%D1%81%D1%81%D0%B8%D0%BE%D0%BD%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+build+9200+x64&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4272/4272865_otfotoshopit_fotografiyu_onlayn_besplatno_na_russkom.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4227/4227053_shema_podklyucheniya_dho_cherez_5_kontaktnoe_rele.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190728_skachat_igru_gta_san_andreas_kriminalnaya_rossiya_beta_2.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ab18.bin
af7dc37ab06f8a5c7baf1c94d111cba4ff908465dddf00805e909098fdb77e22		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AB18 8364 bytes
font_00_sfnt_off000244e2.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x244E2 3556 bytes
font_01_sfnt_off00025265.bin
46db253c0bf340f6843670f41c4ec1ff191eaeec7ba3b5bb110df9c35dd674a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25265 14364 bytes
font_02_sfnt_off00027f88.bin
3772974a8826498948aac6cdfa70d643aa15798fc353ab33373dbe5afa8f9fa1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F88 14736 bytes
font_04_sfnt_off0002c442.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C442 6084 bytes
font_05_sfnt_off0002d3d7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D3D7 3752 bytes

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