Malicious PDF — malware analysis report

Static analysis result for SHA-256 5410e57286058cf2…

MALICIOUS

PDF

112.3 KB Created: 2021-08-19 06:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 84a5e002d292e2f99efa685f2bf78196 SHA-1: 755edb150b14b08eacad54821aac2d51c90aef45 SHA-256: 5410e57286058cf2f6e9c920893d942fabb572f8e7a782be7e6c7349c3a9fc46
162 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external links, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8867

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://assushop.com/userfiles/assushop.com/file/71777366471.pdf In PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c668b8c209d---jemasatolabilubobet.pdfIn PDF document text
    • http://jeansresource.com/js/ckfinder/userfiles/files/93016618.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/kolarenabinarunotidudag.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160e7f3d822d14---23774788509.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/ubupoj2epove90hgarifrpf252/gisutegulesakide.pdfIn PDF document text
    • http://www.gabrielamaciel.net/images/content/file/34052862356.pdfIn PDF document text
    • http://htygroup.com/upload/files/fazulozijekulafa.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/13u62n2552aemam73qinj2c3ut/berukusaborugusise.pdfIn PDF document text
    • https://livstyle.ro/home/livstyle/public_html/uploads/files/29112834366.pdfIn PDF document text
    • http://vita24h.com/uploads/userfiles/file/54232581234.pdfIn PDF document text
    • http://didula.com/img/file/sosexodepon.pdfIn PDF document text
    • http://oaklandscreche.ie/userfiles/files/1365936127.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f0739d24c52---36588426172.pdfIn PDF document text
    • https://full-flavors.com/img/Data/file/57383980473.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/74cafeef021bc86c3081a97a623b68c8/65834283082.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/deradi.pdfIn PDF document text
    • https://mimpishio1bet.com/contents//files/vajozetigabegizexi.pdfIn PDF document text
    • http://worthingtonpark101.com/userimages/90630875226.pdfIn PDF document text
    • http://dunajecbiala.pl/upload/File/sexokikok.pdfIn PDF document text
    • http://cosmic-kino.ru/sadm_files/8469059.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160931831dbe9f---merulowonukerarerib.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=is+wasabi+from+boruto+a+boy+or+girlPDF link annotation

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