Malicious PDF — malware analysis report

Static analysis result for SHA-256 041619757b4fc3fb…

MALICIOUS

PDF

47.4 KB Created: 2021-06-08 19:37:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 10b1b9bc42e3ab12b4a41a7f13875f94 SHA-1: 28af71f78d146a49d09aaea885988da3eb188f01 SHA-256: 041619757b4fc3fb6c7d1b2015ed0c993fdf0382469f6d197aa4ea2b63a766f7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a link farm pointing to compromised WordPress uploads and disposable hosting, likely serving as a lure for a loan scheme. The embedded URLs and the overall structure suggest an attempt to redirect users to malicious sites for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9327

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://ketchas.ru/uplcv?utm_term=pm+youth+loan+scheme+online+apply PDF link annotation
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608862931ce84---79166758883.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1b9230f70---seduzamezojemazatodije.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16084b67020a39---puxoxakegagalivoborotab.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb7ee39f3c---paxoberazad.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/i5eggajpshs6d9p6oocqjnqve4/82164650344.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce4ccac0dc---72838242297.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/giq3eibiegplf914sqn6ss2qi5/38396278319.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607875872db6f---mabowusumo.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/eff4b952c23b6bfd86231471736c810e/33328676682.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/dnnvuf8tnu3m7vmddcg98ecqgc/97892735383.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f52019721d---zitaredosodabigitubo.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffd9895314---zaluromebugoner.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/522e99453a9e03c18b3bf6f819bff541/firateg.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af968d8c12a---31329400892.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/a2ae41532578afedcf1aedafb482841a/49788289632.pdfIn PDF document text
    • http://aquatrustfina.com/userfiles/file/51067937504.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/5r5rju0f4sav8f84paqqrmmlrt/teziwivikagesaxukexe.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/a84ef0b4e220768076ec7a6ac5dd6f07/badatesimelubibixaruru.pdfIn PDF document text

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