Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada37860ca0759e8…

MALICIOUS

PDF

185.2 KB Created: 2015-08-08 09:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 12b4d247cea4fe560af518b2c160e742 SHA-1: 8f3bcebcde320852d99770c2ea659ee9dae61248 SHA-256: ada37860ca0759e8ae7c97bed9305911b7b3d5a74cea472f86ca7ebceb52875c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This indicates the document is designed to lure users to a potentially harmful website. The primary IOC is the malicious URL embedded within the document.

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%B4%D0%B5%D0%BB%D0%B0%D0%B9+%D0%BC%D0%B5%D0%BD%D1%8F+%D1%81%D1%82%D0%B0%D1%80%D1%8B%D0%BC+android&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383914_prometey_skachat_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384461_la6582p_shema.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384160_katalog_torrent_trekerov.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000241dc.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x241DC 3556 bytes
font_01_sfnt_off00024f5f.bin
a9eaacb60f3fa6f8e47f8ca88af35d666b57cb2bc5b822a31362d64c9594642a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24F5F 14468 bytes
font_02_sfnt_off00027c0f.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27C0F 14468 bytes
font_03_sfnt_off0002a6c2.bin
1e9058b8be2c56d74ab8570b8e8f1bfdacc2d05ed120763ea49caf05bc6daee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6C2 6968 bytes
font_04_sfnt_off0002baec.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BAEC 6084 bytes
font_05_sfnt_off0002ca81.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA81 3752 bytes

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