Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e68285685ba63ab…

MALICIOUS

PDF

63.7 KB Created: 2021-08-16 06:12:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: acefb04999c065794f3bef5c49655e58 SHA-1: 7069a06ce00de9266dad4a9f733d73ba4c4dc2b1 SHA-256: 4e68285685ba63ab3ad2a2e6fdd36c796dc3456df9528b9ec23400b41d9f4ea3
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of multiple links to compromised CMS upload storage reinforces the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9614

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yuha.be/_files/file/wowamuxebi.pdf In PDF document text
    • https://vsetinrally.cz/userfiles/file/26508863916.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160841f53454db---bilonolek.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081d013aca92---ruzageworikewekugaxiw.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/66d5a608edaf0a3917dabb5cc9765a5b/74927710743.pdfIn PDF document text
    • http://americusfelderfamily.com/clients/0/0c/0c5e5e27a4da9db51eb23c24aa0fa274/File/62078560451.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a47eefe2a49---92204567879.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/tawedadexogipagejasaduwa.pdfIn PDF document text
    • https://makiriaszto.hu/ckfinder/userfiles/files/riditigoxokigaferuv.pdfIn PDF document text
    • http://thangmayedex.com/webroot/img/files/42235016858.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/372dafc4f7131a7cc8a031a4ebc57fd5/18026091135.pdfIn PDF document text
    • http://banphimchuot.com/userfiles/file/78218002376.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd4fd895b44---17725670316.pdfIn PDF document text
    • http://www.contal-farmer.com/uploads/files/60587916807.pdfIn PDF document text
    • http://quaker1960.com/clients/3/34/346d0055920ff30d27c63167e405b0e7/File/weligarunedopezulujudiw.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/eed3647abf104609dc803d573d565d31/32411766974.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/94826530175.pdfIn PDF document text
    • http://ilovehikari.com/uploads/files/wuwetot.pdfIn PDF document text
    • http://hbleg.com/admin/userfiles/files/gorirabepiw.pdfIn PDF document text
    • http://mimarathi.live/assets/ckfinder/core/connector/php/uploads/files/vawafokapipogifasatove.pdfIn PDF document text
    • https://kltccompany.com/ckfinder/userfiles/files/48248779471.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/65260297445.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/ttljf1rh1dhh2c0un0qm12i1k4/perokezipodawajot.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/hacqd3pvj0k452q5fcevc0n4h1/80903707463.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=mot+d%27accueil+messe+du+dimanche+17+janvier+2021PDF link annotation

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