Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e1b80b245c8016…

MALICIOUS

PDF

47.7 KB Created: 2021-07-02 08:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: c215b434bba2f497faebb3fcbb1093bf SHA-1: 29e738d03213c5b1cc730dea54b653894ab625b7 SHA-256: 29e1b80b245c8016864f12029443eac2e0259cd5e91ec32ad7c7552eced41d5f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of links, many of which point to compromised WordPress sites hosting PDF files. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to trick users into downloading further malware or engaging in phishing. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6973

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://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/2cb7cd27caa8ee6e0f94b469c36f57ae/87619354827.pdf In PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160875cc517fbd---sipuwegibipawowosi.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160982c3941f36---dupujomabuwejebipubimo.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942b82a05be---22136549346.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/cv88mjevh5653sf772h8eacu55/negeviguzikuribuma.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/81qnsd47eqftrbvgrrb162ho6b/zefudininedibe.pdfIn PDF document text
    • https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070dd753e705---5135627415.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160802cba552d5---kazeto.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/dae99804094af21b99c4df2b8ce15a30/34630152464.pdfIn PDF document text
    • http://xn--82cac8d3ajrc0gd0bo4a7nf3qg.com/userfiles/files/96879416585.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/1061e69f45ff760d8fd901f418809d3f/38813622499.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf6a57b1ed---28390688177.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160bc9ea7da038---sumoxer.pdfIn PDF document text
    • http://alphaconsultinggroup.us/vpw/images/file/7381070548.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/4dced4d337ec322c3a5ee79de5ab86fa/87106971947.pdfIn PDF document text
    • https://laplacedesstores.com/upload/file/jagogedomilavujebokisaxa.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/d8af302521c6d89026c5d0868a057be9/mupefowidiwujigex.pdfIn PDF document text
    • http://guanzhuli.com/userfiles/file/46366193080.pdfIn PDF document text
    • https://grandplaza.bg/uploads/assets/file/78433468652.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607370a7406f1---wekawufukesebazobowaja.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=example+of+revocationPDF link annotation

Related samples 8

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