Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a14ba8bc8fde51c…

MALICIOUS

PDF

52.5 KB Created: 2021-06-09 10:53:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ac4e5efd983b869d4ac5fc25030fb2d9 SHA-1: 566f78dec4f45e442a24d623ba6a4bf2000db6c2 SHA-256: 3a14ba8bc8fde51c77f22913fc3a8a9db8475981b37fcf11b99dea8dd915605d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised websites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to exploit users via malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9588

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://crysiq.ru/uplcv?utm_term=word+problems+for+class+4th PDF link annotation
    • https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/e7cc49ba5d0a4b77b51d68a271c12cfd/55102383349.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/elb1rvrqnc0s6lik6ho671sk53/mekisidelebijonoxi.pdfIn PDF document text
    • http://chono.mn/uploads/userfiles/files/pidiseworivewuxemadikiv.pdfIn PDF document text
    • http://agrobud.net/uploaded/file/87408584161.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cad03473a3---vulokovifopojizivivesuw.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/f3130192679f59f565eeef2906fc6c60/81607782304.pdfIn PDF document text
    • http://baugeraeteverleih.de/benutzerdateien/74085019367.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9ac52bc0aeb5f258d851195f8fc0a069/23068401848.pdfIn PDF document text
    • http://asea-admin.com/_userfiles/file/20210510050750.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1608a09a6c0649---40609623064.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/2392e1b256ea2fce6ef76913a3d376b3/fomewigeselebosopajexu.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/mexidolifokifomiponexixo.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/4f0bc863a7ba4aa823fd23a9daa30b5d/95672171224.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/zixadatu.pdfIn PDF document text

Open this report in the interactive analyzer, or submit your own file for analysis.