Malicious PDF — malware analysis report

Static analysis result for SHA-256 206f9bd94b5d73c1…

MALICIOUS

PDF

48.3 KB Created: 2021-07-02 16:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 76205ac5086a5aaa7071ac0d3d1d9fd7 SHA-1: feb33109a6014a385b8acc5a43a87ba77392dfb6 SHA-256: 206f9bd94b5d73c12c14ee7968923b8775029bf1fd75f71cacf35475e2a7f519
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to compromised websites and potentially malicious files, indicating a phishing or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a malicious link farm designed to lure users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8493

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://drafthe.ru/uplcv?utm_term=shape+and+hybridization+of+pcl3 PDF link annotation
    • https://webtechnocrats.com/upload/file/78904258908.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/2b688e79f0012e152f16527c7325ad4d/gibaxo.pdfIn PDF document text
    • http://sns.hu/_user/file/xukesezosanijexerukufe.pdfIn PDF document text
    • http://mkngsp.ru/upload/files/25771830958.pdfIn PDF document text
    • http://chinalanpa.com/images/upload/File/15126970739.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8eb7dc1ef6---11427428085.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c994b322e3c---lizopodavadomubinuva.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/f02784b164f7a4e718cfe89a69e0c29e/sigeposibarakuguvorosu.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/7fc24ac0e796faa221c49bcdc3c5914b/wozifokabekodapi.pdfIn PDF document text
    • http://mrbossamktown.com/uploads/files/nojaselejurokexaxone.pdfIn PDF document text
    • https://notrepanierbio.ch/userfiles/file/56877919183.pdfIn PDF document text
    • http://hkalc.com/userfiles/59949543922.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/0ad2ac24d995aaf9ca3b2de040f596f2/wuladixezuluripubaba.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bb638f0917f---pojetimutawofexakoja.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/3ee65df4fcc11e9bfcc6e6f2c1d0e7b6/78260334636.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/2e64ab4f74eadfbd348652f731cbe9d2/34292669567.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609b21d22cbd4---tafuxeri.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b84d9a2b862---97082760441.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/nolak.pdfIn PDF document text
    • https://pk-kuepfer.ch/ckfinder/userfiles/files/wakomuxodugoburoju.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b442bdebddd---jibosaneladakawosixun.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/167ecd74845752aa0b1196a308586015/busubonexoxazetitifamuda.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/c9001b0951b658ec0135052573371fb9/8463983052.pdfIn PDF document text
    • http://wksystems.net/HotelEstimator/userfiles/file/58459479539.pdfIn PDF document text

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