Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19182749ba9ad79…

MALICIOUS

PDF

42.7 KB Created: 2021-07-14 07:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: d88a95edc5fb212d51dec5587188d199 SHA-1: c1f426850a60fb869581908f50c4f10d7e879e5f SHA-256: f19182749ba9ad798edd7c5071739640ea76374ea5ef9395c5a3f83f5585ebf7
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF is designed as a screenshot lure, presenting an image that tricks the user into clicking a link. The link farm within the document points to multiple compromised WordPress sites, suggesting an attempt to distribute further malicious content. The ClamAV detection and ML classifier indicate a high likelihood of malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6947

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://carefirstwalkathon.com/clients/8/89/89514deb4c0e8807eb046cac28c4977f/File/gogupepulobomuvuwavesonep.pdf In PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/290d349e13bdac84d4f25d20876ab18e/mazunaruti.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160896c48db0b8---13510597018.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606e619c53a9b---konuvorogoja.pdfIn PDF document text
    • http://vtaky.sk/media/file/jejaxepom.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1ad441c6e---baluvapiwusumedazat.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b46a9a45156---bopisorilugag.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160717a401af4d---tefojijume.pdfIn PDF document text
    • https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607aaeb4cdccd---14151933328.pdfIn PDF document text
    • http://firegallery.ru/img/upload/98752514043.pdfIn PDF document text
    • http://longearedhounds.com/clients/65743/File/goxobonetulule.pdfIn PDF document text
    • http://myphammonly.com/luutru/files/1331939235.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/eoadkehp85j24k1rd9g3q2t3k8/jegobe.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160aee664305e5---fezinozejafan.pdfIn PDF document text
    • http://salukool.ee/upload/userfiles/file/boroxibu.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1609bfa7b9bdbf---53410007781.pdfIn PDF document text
    • https://teenvolunteerhouston.com/wp-content/plugins/super-forms/uploads/php/files/f7ee29a15d186ee914a5625dc897e929/30078674886.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1609328da7b5e7---lonunevawodowex.pdfIn PDF document text
    • https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/68u7e66h9t8h2ogovbklvnttqj/60269544766.pdfIn PDF document text
    • http://oodow.cn/upload/file/21061421314738559726m5fp0oel24.pdfIn PDF document text
    • http://chi-kara.net/userfiles/file/3344421238.pdfIn PDF document text
    • https://metricgroup.it/uploads/file/39062559220.pdfIn PDF document text
    • https://sanipacific.com/attachment/file/wofadeza.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=class+7+science+lesson+1+question+answerPDF link annotation

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