Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad7ccf1f141a7583…

MALICIOUS

PDF

348.9 KB Created: 2015-08-19 14:16:01 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-06-13
MD5: 8eff2d6a85d47a26bd7a0f04012a89af SHA-1: d3cae68e6a61d43e4a33559c05a0e4506f057dbb SHA-256: ad7ccf1f141a758370e75363f91e9af6630152d29ae93b7091bee3874af56a60
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL, http://botcraftman.ru/, is likely used to redirect the user to a malicious site for further exploitation or malware download. The ML classifier also flagged this PDF with high confidence.

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=Vzlomster+8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626727_russko_kuyrguyzskiy_perevodchik_tekstov_onlayn.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626647_skachat_stalker_chistoe_nebo_na_android.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626718_fable_3_russkaya_ozvuchka_skachat_torrent.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005250d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5250D 10524 bytes
SHA-256: 1e39d8305c63bacb33465a4bb2c38baa1ed5a170b079ef1dc41651eb2816c6d3
font_01_sfnt_off00054295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54295 16564 bytes
SHA-256: ef58f8fa5085508647bc282d6af214f1f5c8457c106f4f0e4d960c28816221a7

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