Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4e3842ab2c37e2e…

MALICIOUS

PDF

184.8 KB Created: 2015-07-23 20:32:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 3520ec654e47b3decdf3fe487b0a8d9c SHA-1: 3d430e3e6fc2279f89872b7282eef2342d95d21f SHA-256: b4e3842ab2c37e2e163909b46c1c7f3555ef74d33c3080e22fb37368ad31fe31
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure, indicating a likely attempt to lure the user to a harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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=forza+horizon+2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+pc&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183177_kursovoy_proekt_po_arhitekture_zdaniy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184330_dogovor_brigadnogo_podryada_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184580_dzhon_medina_pravila_razvitiya_mozga_vashego_rebenka_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ede.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EDE 3556 bytes
font_01_sfnt_off00024c61.bin
6f5a9ea2f0d68cc3b591e9572c1d7c461d383946311b809622554bfdcbd0473e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C61 14700 bytes
font_02_sfnt_off000279d8.bin
68285a4750094ba0e1909c22718a80283d14da31e1739ee6ba5256a838e5be2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279D8 14668 bytes
font_03_sfnt_off0002a50d.bin
86f76254184d8b2784f77777924e10bf280bd0d118c6652b8f0f19cf3f0a06a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A50D 7004 bytes
font_04_sfnt_off0002b942.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B942 6084 bytes
font_05_sfnt_off0002c8d7.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8D7 3752 bytes

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