Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5590c455a443fa6…

MALICIOUS

PDF

64.0 KB Created: 2021-09-14 10:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 17deaa5c86160b472e628b58960057ad SHA-1: c230c445b77b4821fe127cbf7757c58c8679a245 SHA-256: e5590c455a443fa6937eaa6abe84b55beb6dad8956c6d8e3eec2839fb8ab2e2a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, many pointing to domains associated with compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6405

Heuristics 5

  • 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.
  • 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://baoveantam.info/upload/files/8060512540.pdf In PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/161392220c3d89---pavipopele.pdfIn PDF document text
    • https://congthuonghotel.vn/app/webroot/files/images/pages/files/51010724648.pdfIn PDF document text
    • http://lamardaegu.com/upfile/user/file/83305712141.pdfIn PDF document text
    • http://balcimimarlik.com/resimler/files/63991618576.pdfIn PDF document text
    • https://vanrun-it.nl/userfiles/files/lelokazurokelepinafowat.pdfIn PDF document text
    • http://tamtamphat.com/upload/files/67735089748.pdfIn PDF document text
    • http://omnoiptv.com/outscapes/admin/ckeditor/uploads/ck/files/82631011002.pdfIn PDF document text
    • http://qqwandai.com/uploadfile/file/nofodefaxeruvowelabunoba.pdfIn PDF document text
    • https://istanajp.net/contents/files/25883039364.pdfIn PDF document text
    • http://pet.nfe.go.th/m_site/ckfinder/userfiles/files/46625033693.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/161386d88ecaeb---gigonijev.pdfIn PDF document text
    • http://jngf.cn/files/file/nabakiremek.pdfIn PDF document text
    • http://rudolphi.nu/userfiles/file/92167889065.pdfIn PDF document text
    • http://kvarkeno56.ru/userfiles/file/1387196570.pdfIn PDF document text
    • http://bacsiha.com/public/ckfinder/userfiles/files/47638461361.pdfIn PDF document text
    • http://littlepearlbooks.in/data/eimages/file/dedodovifurutirobudet.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/sr17lenikupces1hcek8nee8rn/fojaniwososupiwumutugexa.pdfIn PDF document text
    • https://mimpiindah2.com/contents/files/fowakidulexebamepix.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/kv0q6hkps5h8eth2c805skkmqn/venobepazoninezozowa.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/dbb9ca60ccdbf182a92e3a0c4390c4c8/17827456209.pdfIn PDF document text
    • http://gomsuhoangminh.com/app/webroot/uploads/files/52894111444.pdfIn PDF document text
    • http://www.fan-consultants.com.tw/ezadmin/ckfinder/userfiles/files/20165083422.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/7f79lktofno39ifb01rgco2u2r/sewejinofajulew.pdfIn PDF document text
    • http://vallovin.it/userfiles/files/mibazum.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=drag+race+thailand+watch+onlinePDF link annotation

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