Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1684a0e1cb1e4e…

MALICIOUS

PDF

62.5 KB Created: 2021-08-11 02:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7fda4eaeb80cb54a76c2f202e05961af SHA-1: 1253ca1d4c99307531032b4a2bed855abd863544 SHA-256: dc1684a0e1cb1e4ed6edc62aaebba7469f58c70201a22d4ccdf3dc999c130d88
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It functions as a link farm, containing numerous URLs that point to compromised WordPress upload directories. The primary purpose appears to be directing users to external, potentially malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9569

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://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/b159d869764f5150c3ce22966a0274d9/46013777812.pdf In PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/b6e9718304dc530dda51ac4e1c743f85/tovosugu.pdfIn PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1608d0df157638---14985680712.pdfIn PDF document text
    • http://fuga-hotel.com/CKEdit/upload/files/badigiru.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16071368051eee---guwulifonem.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/svd1tkabmrevibctf04g7eaege/62107033781.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/5c65dc1e1393d5c99d6c6455e6a01d0d/riligoxedatirit.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160915f36549c6---xumewe.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/30976d744c98ff3423efe439021b3112/34857551283.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/40mfojs76nsunegcgi9dqgceec/koruwubifirivumimavibuk.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160914b1f20a3e---17468912397.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2116dd9f5f---63035117708.pdfIn PDF document text
    • http://www.fd.ntou.edu.tw/ckfinder/userfiles/files/momosevugemilojug.pdfIn PDF document text
    • https://coevent.ru/upload/files/jekiwoxebubadal.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/229976c15c10ecc3fe5c59f3bb2cd351/xisinukerezuxetuwup.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609646a3a7cdb---99277020208.pdfIn PDF document text
    • http://www.hangmandigital.com/files/file/33104100123.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/21b9b39d30220c7700475f7715549ba8/84167447257.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160e313f6718d9---61754758251.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/relerobasavemuzafagopuzi.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/gg0ofmvgdjnfuh8t1hpcjlbokf/nevodumizujuvuxusasidujuf.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/cbb984ba153ecbe65ec0f909ced7d2ab/zodozebolizu.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/561ae7c3ade10340128e8d712a8adde5/79506648616.pdfIn PDF document text
    • http://www.boldino-hotel.com/ckfinder/userfiles/files/78969980888.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=reading+comprehension+mini+lessons+high+schoolPDF link annotation

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