Malicious PDF — malware analysis report

Static analysis result for SHA-256 47074b09b9339250…

MALICIOUS

PDF

72.1 KB Created: 2021-09-03 13:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a8488d53dfda37b6c383e08e68523ad0 SHA-1: a4589a1f044abf77e6638f5dd2168f0676163e0a SHA-256: 47074b09b933925023084494404ec577874fc410e6178f5ef97ea3b89106c55f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains numerous links, many of which point to compromised websites or disposable domains, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The file's structure as a link farm is a common tactic to obscure the ultimate destination and evade initial detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5948

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://krisoc.ru/uplcv?utm_term=zkteco+time+and+attendance+software+manual PDF link annotation
    • https://yuss.it/file/97425087762.pdfIn PDF document text
    • http://lamekatus.com/uploads/ckeditor/files/71506532104.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/1c3a7000531d66d662dce9f927e68ac3/73856164633.pdfIn PDF document text
    • http://ubytovna-krumlov.cz/userfiles/file/buzepefasurunijifuzaxe.pdfIn PDF document text
    • http://e-sportis.com/images/upload/71266808894.pdfIn PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/18174624596.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/64876012688.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/277d3a2ade4acdd67ab26e40a2b6cd87/75404825286.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/8911bfaf6fe66a7a82abd2b293eb540f/26738471731.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/0baa4769b386146def86028137d4eecc/guwifewogunevokade.pdfIn PDF document text
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/eq0qpk20b01cphptdgvutfmvv5/9104390577.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084a0aa0045d---bozase.pdfIn PDF document text
    • http://lycee-elm.org/userfiles/file/baroveganeja.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b29cc613b5f---purala.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/c6da22169048680cc45124a4e2e89548/pavetixasidibizazapidep.pdfIn PDF document text
    • https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/i85e7dfgkrks6riv4gaesenj6t/jikerabanado.pdfIn PDF document text
    • https://aspirans.com/files/file/momokitirazazejowabetawig.pdfIn PDF document text
    • http://casier-a-bouteilles.com/file/22455968622.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/v1dj0e7mledpb6fac5cmlceolm/fipawabelogikolov.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/fazubezo.pdfIn PDF document text
    • http://animalscipublisher.com/files/upfiles/file/30351416694.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc145379def---41125760860.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608b21c59f1de---laxilej.pdfIn PDF document text
    • http://hungbuloon.com/media/ftp/file/mikufazisudurosojawuz.pdfIn PDF document text

Related samples 8

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