Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d15920848dce00d…

MALICIOUS

PDF

54.6 KB Created: 2021-05-10 06:59:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8bc5cd96919e00cd0c83963ce4b0c92 SHA-1: 49565653f6954439a30e999c47f9928a275ada0c SHA-256: 5d15920848dce00d8f2f5714d2f3aea85fa77765734d604cd023166c157f874f
154 Risk Score

Malware Insights

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

This PDF was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to potentially compromised WordPress sites that host further PDF files. This suggests a multi-stage attack where the initial PDF serves to redirect users to malicious content hosted on various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/16083c01925496---buwaxoz.pdf
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160703443e4858---53990086658.pdf
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160745f0ae981e---warikogizibogagarego.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16079a31e3f78c---63900085462.pdf
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/ca49b7b048461df38ea3d1cae40712d4/giwake.pdf
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160908c4f6304a---73483059673.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c78bbeeb16---90392992771.pdf
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/35a4f17520f89d60796a4419929da190/vifajorunakikinexelof.pdf
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/e5ba59769623d5c4adf3b5c78a960cc9/365832459.pdf
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609037c30f5fb---wizaribunugelolij.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/c046110bfab904a71dd340453d58f3af/torivibazetuvebabix.pdf
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/73f35dd5b261d022cf3b0de519346913/76658711335.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160833c341f519---27162971920.pdf
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b117790af0---vagetasixarojobifidemuf.pdf
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160705efa50180---85273648928.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=jan+cartoon+mp4+full+hd

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