Malicious PDF — malware analysis report

Static analysis result for SHA-256 38b4f05dc255cafc…

MALICIOUS

PDF

183.5 KB Created: 2015-08-05 15:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a6a34ddb91371127abd8c6539ca4fa13 SHA-1: d9249f1bc136f1d25e199d4da16aed13e049921e SHA-256: 38b4f05dc255cafcb38733ce4a2f1aff8498386e6aed8e6e16ac65436f4691a3
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. The embedded URL `http://botcraftman.ru/?lip&keyword=%D0%BA%D0%B0%D0%BA+%D0%BF%D1%80%D0%BE%D1%87%D0%B8%D1%82%D0%B0%D1%82%D1%8C+%D1%84%D0%B0%D0%B9%D0%BB+pdf&charset=utf-8` is the primary indicator of malicious intent, suggesting a phishing or malware distribution lure. No scripts were extracted, limiting further analysis of the execution chain.

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%BA%D0%B0%D0%BA+%D0%BF%D1%80%D0%BE%D1%87%D0%B8%D1%82%D0%B0%D1%82%D1%8C+%D1%84%D0%B0%D0%B9%D0%BB+pdf&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305134_primeruy_tehnicheskogo_zadaniya.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304621_skachat_gta_alien_siti.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305381_skachat_zvuk_barabanov.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023b30.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B30 3556 bytes
font_01_sfnt_off000248b3.bin
22ff5e7b7f33399f9c0df18c6bda8dd7db836d89fa06b634ea260b20df40de5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x248B3 14476 bytes
font_02_sfnt_off00027629.bin
1cf905e2828f21bff9d691db1c24bfb557907d127e4b2bb0e7f5194afa5cf6ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27629 14564 bytes
font_03_sfnt_off0002a130.bin
e6e693a9b3221cfcc35e3bb44d5fa86a1f10087d07d0846c0c231a60fad78f8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A130 6692 bytes
font_04_sfnt_off0002b43b.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B43B 6084 bytes
font_05_sfnt_off0002c3d0.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3D0 3752 bytes

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