Malicious PDF — malware analysis report

Static analysis result for SHA-256 872634d4619fa97b…

MALICIOUS

PDF

63.6 KB Created: 2021-09-07 06:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b40f575667f8eb68be42cc6237c45c80 SHA-1: 7571c94c6f79bf5ebda38c5cbb6914b831819a4d SHA-256: 872634d4619fa97b5ee7a08c1e1b86af8b3d892db8d78fd255fdbeb45130cbee
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature. The file likely serves as a lure to direct users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8191

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 https://newtop-eg.com/userfiles/file/luramatamerepitebav.pdf In PDF document text
    • http://kelvista.lt/images/files/palafutesixexogokiw.pdfIn PDF document text
    • http://rewitex.pl/userfiles/file/71444167744.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/16094833e4d6be---nujadujasonexinilut.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/d56908b1d6fff0ded9fed30f2ae475bf/94368383248.pdfIn PDF document text
    • https://299-45.com/CKEdit/upload/files/63587448713.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608605c199998---vamezulamidigofokojefi.pdfIn PDF document text
    • http://royalwedding.jp/images/blog//file/kimapafatofolavatavufodew.pdfIn PDF document text
    • http://minuspk.ru/minuspk.ru/userfiles/file/88544328443.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/dd01f7d1fb64dab592789ef5e8d035a5/lubupelesozupazon.pdfIn PDF document text
    • http://sambometal.com/dataroom/file/52192031861.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/oqjvreq87nuonj2o6cmb9er2gr/silakizaxenexezat.pdfIn PDF document text
    • https://ladangmimpi2.com/contents/files/xugepesafuxepusano.pdfIn PDF document text
    • http://highlevel.pl/userfiles/file/45553970963.pdfIn PDF document text
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/5433b16bd3925f68944604bb5c94d1df/mujokuwuvijewanoxitelaw.pdfIn PDF document text
    • http://telesson.net/_UploadFile/Images/file/50242910382.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/2cd7b98fd6d785aa6e72539e1711In PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=ergoline+advantage+400+turbo+power+manualPDF link annotation

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