Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a32df3dd2e28ce5…

MALICIOUS

PDF

59.5 KB Created: 2021-09-07 19:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0a5273b9a750f96736c803455088aa22 SHA-1: e13c437f671fc88c353a40494eacd2812cf6064a SHA-256: 9a32df3dd2e28ce5adafe8a768f6cbe100a6fcafc5fc57f3d645308422299073
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8763

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://kadh.kr/bobod/upload/file/zivepoloza.pdf In PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b0be5940b---sazavodomevezolizuremi.pdfIn PDF document text
    • http://urs-certification.com/gais/image/file/25259066469.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160724f041ba8d---85118720562.pdfIn PDF document text
    • http://jdhs77.com/clients/58520/File/57268531560.pdfIn PDF document text
    • http://harc-ias.vn/Images_upload/files/sefuzi.pdfIn PDF document text
    • http://abwrosedale.com/uploads/files/xagurokosewudasexovor.pdfIn PDF document text
    • http://jpind.pl/userfiles/file/63463724514.pdfIn PDF document text
    • http://theprofitnesstrainers.com/userfiles/file/likiza.pdfIn PDF document text
    • http://maslatalaia.com/userfiles/file/nidiselimaj.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/d149df9fefec9c993f72f003c522d5d6/kezimivakobirisos.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/5ccd1fe1605ec3a68937529a2e70e6c7/61621231339.pdfIn PDF document text
    • http://www.bandungmesin.com/file/19238344133.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/72654149278.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/2enmdirmgbafqua7340s5l1fb5/zamewune.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/9d10d2676cedff9554e2f7f7d5215958/55600006575.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/21440802400.pdfIn PDF document text
    • https://weilaimachinery.com/userfiles/files/tanof.pdfIn PDF document text
    • https://visionbrindes.com/admin/fckeditor/userfiles/file/48141483353.pdfIn PDF document text
    • http://schmetterlingsgaerten.de/file/kaxavu.pdfIn PDF document text
    • http://elverum-revmatiker.no/images/file/mobugedixejowugo.pdfIn PDF document text
    • http://varosom.hu/userfiles/files/nakaxogisulusile.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160771c64686d4---39922463806.pdfIn PDF document text
    • https://mosconi.net/userfiles/file/30869170845.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=optimization+techniques+notes+for+bca+pdfPDF link annotation

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