Malicious PDF — malware analysis report

Static analysis result for SHA-256 7216ea64dca2717d…

MALICIOUS

PDF

347.8 KB Created: 2015-08-21 09:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9408cdaf7b267d3c650d422222e7a8ca SHA-1: 4ea91bbcf731f7d9aa3664f5f7a7ce7cbeb25a52 SHA-256: 7216ea64dca2717dce5c7dc9e41b0f13c1bf83d8389edde45543ec4d79047b6f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. 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 0.9980

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%84%D0%B0%D0%B9%D0%BB+%D0%BB%D0%B8%D1%86%D0%B5%D0%BD%D0%B7%D0%B8%D0%B8+%D0%B4%D0%BB%D1%8F+avast+premier&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654834_euro_truck_simulator_2_kod_aktivacii.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654746_dyevid_rok_mozg_instrukciya_po_primeneniyu_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654777_rezultatuy_egye_po_istorii_2015_orenburgskaya_oblast.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052377.bin
4e4440cec74a469622f5d85a5eebf0b65b616132a26e9862a77c5221a05bc92d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52377 10240 bytes
font_01_sfnt_off0005402a.bin
6e2c032f1bbae2bd6211fed545230c9fcfad33dc148b3093d256dce7d55ab33d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5402A 15828 bytes

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