Malicious PDF — malware analysis report

Static analysis result for SHA-256 975486bf9b839cbb…

MALICIOUS

PDF

191.7 KB Created: 2021-08-17 16:10:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 6bd312c0bf1374d45ce813ebede8c739 SHA-1: 54536ec97ae445e1e723feb17138f609aeced84d SHA-256: 975486bf9b839cbbc936164bdd96ff01bdd9123ea93eaa00b028716f8b95b7fb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and heuristics point towards techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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://jotekonybakterium.hu/userfiles/files/31310270909.pdf In PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc91981ffa4---rilamere.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-7-20/20210720233903319319.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/26103857718.pdfIn PDF document text
    • http://opusincertum.it/userfiles/files/39400220412.pdfIn PDF document text
    • http://bertoniamministrazione.it/bertoni/public/file/zosomozipavanijuto.pdfIn PDF document text
    • http://zhengfutz.com/v15/Upload/file/202186311528330.pdfIn PDF document text
    • http://borisovhlebprom.by/var/upload/file/86444953435.pdfIn PDF document text
    • http://dailymaytrogiang.com/userfiles/files/wugamidis.pdfIn PDF document text
    • http://faurerom.com/userfiles/file/febativaki.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16095be1547d2c---68020845379.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afeb1285672---nuwidasipipojifoj.pdfIn PDF document text
    • https://wittnebel.dk/file/gakorawexetuxo.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/fofabojasodifukuremuta.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/gbpr9cqv934rseso0et92grpr6/29495382467.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cebebfc9f1c---33971115524.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160becd296f3e5---40232703175.pdfIn PDF document text
    • http://lblussana.it/images/file/xoletulikabimalevonofos.pdfIn PDF document text
    • http://stardentalcare.org/userfiles/file/30283013334.pdfIn PDF document text
    • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/a67ipad1nbh4s5plf9c1aqk510/fakilekebokefozikiku.pdfIn PDF document text
    • http://christopherspubandgrille.com/userfiles/files/nefikofu.pdfIn PDF document text
    • http://chrisdepanneservices.fr/Sites/cds/files/jukebosozeju.pdfIn PDF document text
    • http://booklandbooks.com/userfiles/file/ditoj.pdfIn PDF document text
    • http://vtvxm.vn/userfiles/file/46499986690.pdfIn PDF document text
    • https://www.ideaklinikankara.com/wp-content/plugins/formcraft/file-upload/server/content/files/160768076c53d9---zavenuzikigokupanemomojud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=a%C3%A7%C4%B1k%C3%B6%C4%9Fretim+fak%C3%BCltesi+ders+kitaplar%C4%B1+pdf+indirPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.