Malicious PDF — malware analysis report

Static analysis result for SHA-256 f40530eb4e6f9922…

MALICIOUS

PDF

64.0 KB Created: 2021-07-27 11:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7554a60961f3213244f23c838c2ab462 SHA-1: df22a3a0bf6bdff68c1d22dfd38245a5f53ae009 SHA-256: f40530eb4e6f9922039646135bfc8557e5c723180a6c6ab7b234d375fc1444cc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many hosted on domains flagged as disposable or potentially compromised. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO spam. No scripts were extracted, but the PDF structure itself is designed to redirect users to malicious or untrusted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9604

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://soccerauquebec.com/userfiles/file/lifavewejigugisenubu.pdf In PDF document text
    • http://cuacongtudongbinhduong.com/upload/files/19357605891.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d52f70664ed---dolubawawirodakeju.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d48e82296---30086297916.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/15457049315.pdfIn PDF document text
    • http://banghetretruc.com/media/ftp/file/80586707422.pdfIn PDF document text
    • http://www.enfersalus.com/ckfinder/userfiles/files/48302751616.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb4fa3a652---10643685726.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f56425602c---jirowaredexamigip.pdfIn PDF document text
    • https://rdsdealers.com/ckfinder/userfiles/files/20767138009.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16089f98a47383---44725913475.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad816371fcf---pexuzebotadawatex.pdfIn PDF document text
    • https://medius.sk/userfiles/file/78236763151.pdfIn PDF document text
    • http://azizolace.cz/images/file/65644130357.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160734f4a38580---94171456275.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090c7f2bb6a4---luwuxajuxabitimexunur.pdfIn PDF document text
    • http://shiokuda1.com/contents//files/zojijiwi.pdfIn PDF document text
    • http://effektfilm.de/files/file/zevilesikapivexinadedo.pdfIn PDF document text
    • http://franzoesischebulldoggen.eu/userfiles/file/86284013425.pdfIn PDF document text
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e7eacda5a---jasusolubinelolajobovose.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/fibfaa8dgvka5iem61dfs8vddd/gifezu.pdfIn PDF document text
    • https://ksuskalology.com/images/file/dumetedewakofewexow.pdfIn PDF document text
    • https://ewdel.cz/ckfinder/userfiles/files/61046303168.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=cool+fonts+download+mac+free+handwrittenPDF link annotation

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