Malicious PDF — malware analysis report

Static analysis result for SHA-256 7956666a6f4c65cc…

MALICIOUS

PDF

70.9 KB Created: 2021-09-14 01:00:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 6644618c2b7a082c03cc7e109b56617c SHA-1: 9dc2e698a24951aa875cdc2f663ba6dce5b5b4b7 SHA-256: 7956666a6f4c65ccdf23d07a7791294e5969257f60cefde8deab5c5e103c5af2
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The critical ClamAV heuristic identified this PDF as a phishing trojan. The PDF contains numerous embedded URLs, many of which point to suspicious domains and are likely used to redirect users to malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further indicates a pattern of using disposable hosting for link farms, reinforcing the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4326

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://piti.leaddeehub.com/userfiles/files/63593372828.pdf In PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/c34d5ef535b85a28c9ef2041c7e8c438/getabulojekusalokejax.pdfIn PDF document text
    • http://quaisetoiles.fr/img_pages/file/xanigilegek.pdfIn PDF document text
    • http://proleague.dk/userfiles/file/78718476825.pdfIn PDF document text
    • https://apra.pl/files/file/82422510008.pdfIn PDF document text
    • http://widerbet.pl/userfiles/file/mezetubotonojosizuxudolo.pdfIn PDF document text
    • http://at2apigroup3.com/contents/files/87765394914.pdfIn PDF document text
    • https://mastirz.com/userfiles/files/vudolukijolowegunabozu.pdfIn PDF document text
    • http://airzo.net/userData/board/file/fepurivunubo.pdfIn PDF document text
    • http://3dsami.org/uploadfilefiles/gopux.pdfIn PDF document text
    • https://www.igescanada.com/ckfinder/userfiles/files/13096408394.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613a48ed75e42---wogibepe.pdfIn PDF document text
    • http://www.mediagrand.hu/data/editorfile/pebitenumozevotu.pdfIn PDF document text
    • http://assessmentinsight.com/ckfinder/userfiles/files/21456969100.pdfIn PDF document text
    • https://nikosdimos.gr/userfiles/file/53302738590.pdfIn PDF document text
    • http://hydrem.ru/images/file/ruvukebefefupusuvopan.pdfIn PDF document text
    • http://oletrans.sk/editor_uploads/files/51076213623.pdfIn PDF document text
    • https://serviceelectric.ca/userfiles/file/8875550139.pdfIn PDF document text
    • http://warungmimpishio.com/contents/files/melexe.pdfIn PDF document text
    • http://hide-bo.com/img/tmp/file/94150915200.pdfIn PDF document text
    • http://cuanhuaabshanquoc.vn/files/50466748473.pdfIn PDF document text
    • http://simkoongschool.com/uploads/editer/files/15698594753.pdfIn PDF document text
    • http://alphamarino.kz/images/news/file/7065993384.pdfIn PDF document text
    • https://klubkanine.com/home/klub/public_html/ckfinder/userfiles/files/wefejufumawiwifiw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=mobile+legends+free+coinsPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD088 10524 bytes
SHA-256: 070c16d04d33141fa7f71ddd2d7fd0298ad2989459c5eb7c08a8d45b238a32bc
font_01_sfnt_off0000e853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE853 17308 bytes
SHA-256: e13f22f1cf451ef147c127691c34fb17761e3c7e89ae76cd359b2e50ce5a71d9

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