Malicious PDF — malware analysis report

Static analysis result for SHA-256 a333b98d23e385b4…

MALICIOUS

PDF

54.7 KB Created: 2021-05-01 13:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bcf9fa192aa4dc4d01b00747b6cac76 SHA-1: ec867c804716eff03dccae8f28906b954644a4bd SHA-256: a333b98d23e385b4f6c0eabd98279bc2c24f7a087d951acda70e6cf8ae3abf25
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains a link farm pointing to multiple compromised websites, likely to host malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically a phishing or trojan delivery mechanism. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into downloading further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7673

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 http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5ef507137---bagolemobapukalafolinif.pdf
    • http://abpaluso.com/upload/file/23561014408.pdf
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16089dcea527a1---magizukamupegekuxegefuze.pdf
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160897a7995bd8---pukidaligimuwewawizi.pdf
    • http://ahkjt.com/upfile/file/24181614964.pdf
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f30789e511---20860755515.pdf
    • http://aiswaryamatrimonials.com/fck_uploads/file/fadusiveninezinepib.pdf
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc49b729be---31227635265.pdf
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/2e4ec9oio9pivmbeacnfvonln9/potefadetaribavav.pdf
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/4lbolhrg2updq9otr08l27blhe/wuwezotepagokezotone.pdf
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/d05acf6ab30bd8e5282c8509268679ed/nudewasoxugopejurenapuran.pdf
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608844e822cf1---81614524983.pdf
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/46qj8q4nd4m7u9jhfu0r3defe6/wakiwudoxenitabawo.pdf
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16072241485404---kafaxabemegilo.pdf
    • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/a65f05a02c29434763f244eb0786babb/tilufixumuwulofose.pdf
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/62fd176647471e18b85cf422ac43a864/9672716875.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=report+power+outage+westerville+ohio

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