Malicious PDF — malware analysis report

Static analysis result for SHA-256 981f30d9a6fac18d…

MALICIOUS

PDF

54.6 KB Created: 2021-09-24 22:24:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: bffb1ab93179888fa9aeaa8e7ac17684 SHA-1: f1663a387d1442a0ed73fb926accd8bb6a3de8e3 SHA-256: 981f30d9a6fac18d884448601b1bac8eae42d37856fcc288105a71c03802974e
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of UTM parameters in some URLs indicates an attempt at tracking or SEO manipulation for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6441

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://huntic.ru/uplcv?utm_term=adobe+after+effects+cs4+crack PDF link annotation
    • http://urduhadith.org/survey/userfiles/files/gewabute.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/16138b99502432---8302993517.pdfIn PDF document text
    • http://ave-france.com/pics/files/76093342132.pdfIn PDF document text
    • https://soudurelausiere.com/upload/editor/file/89852153769.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/422983a563ff853ecef942395831bf9b/giwaposutos.pdfIn PDF document text
    • https://jordanadams.com/ckfinder/userfiles/files/moritatepedolobe.pdfIn PDF document text
    • https://recapress.com/ckfinder/userfiles/files/89356691868.pdfIn PDF document text
    • https://martan.es/cenavarra_userfiles/files/29550325613.pdfIn PDF document text
    • https://www.la-melodie-des-saveurs.fr/ckfinder/userfiles/files/32859926782.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161491411cc1d4---89087716375.pdfIn PDF document text
    • http://bodybybodyology.com/ckfinder/userfiles/files/89217930972.pdfIn PDF document text
    • http://www.oomewatersport.nl/upload/files/vogere.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/21967057034.pdfIn PDF document text
    • https://www.gullyracing.it/admin/ckfinder/userfiles/files/fikime.pdfIn PDF document text
    • http://brixtontaxi.com/survey/userfiles/files/28738771652.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/08bdf9bd73e99c6acbd7a678a2a9458b/pikotu.pdfIn PDF document text
    • http://dmkert.hu/files/file/nenimego.pdfIn PDF document text
    • http://www.annaleehuber.com/content_files/file/borawofateruredilevenumu.pdfIn PDF document text
    • https://mantyobras.com/userfiles/file/gegiwobi.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614062dfc237b---93025160952.pdfIn PDF document text
    • http://canoto.us/Images_upload/files/kogagumexa.pdfIn PDF document text
    • https://swagath.co/new/ckfinder/userfiles/files/fivuluxigopidovu.pdfIn PDF document text
    • https://honghow.com/ckfinder/userfiles/files/26645967572.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613fb88e0002e---56783528326.pdfIn PDF document text

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