Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed615f5e3d3d2499…

MALICIOUS

PDF

49.8 KB Created: 2021-09-09 18:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 9237e4d83e6203ea5a5548eb8b7d973d SHA-1: bb35d74f8957f6cd4e9bfbfb43bd7e926de9eff9 SHA-256: ed615f5e3d3d24999bfb50f87501c0506079d7615ec025aa60a7d9764ff10708
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous external links, many pointing to domains associated with compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the exploitation of PDF vulnerabilities to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6282

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://smidgel.ru/uplcv?utm_term=zonko+tablet+manual PDF link annotation
    • https://dananeye.com/uploads/files/202109040430442129.pdfIn PDF document text
    • http://healhumanity.foundation/userfiles/file/39361057406.pdfIn PDF document text
    • https://www.privathospitaletkollund.com/ckfinder/userfiles/files/28247028236.pdfIn PDF document text
    • https://gtselect.fr/ckfinder/userfiles/files/58109155705.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/161343095c3a32---tavajo.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1612f717e09465---94291572489.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/a8d062f9aaab6b7cf962e14664fca450/bimevanejalikodo.pdfIn PDF document text
    • https://nstoplana.rs/ckfinder/userfiles/files/30497842020.pdfIn PDF document text
    • http://neogmbh.de/www/sites/default/files/userfiles/file/13040264510.pdfIn PDF document text
    • http://terminsk.by/pics/files/keposivoxamatul.pdfIn PDF document text
    • https://matratva.in/userfiles/file/tabakumurenulaso.pdfIn PDF document text
    • http://clinivetmadonnadirosa.eu/userfiles/files/kigukowedejatatalevorexon.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/735908315c704591db9449cc5e6031cf/wililiwi.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161340ed35a277---97962762687.pdfIn PDF document text
    • https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/lixuxolumob.pdfIn PDF document text
    • https://dintek.eu/uploads/file/wemirimibupijamanesopenab.pdfIn PDF document text
    • http://agrostroi-proekt.ru/ckfinder/userfiles/files/guvarazolofepukabop.pdfIn PDF document text
    • http://fertilityupdates.com/userfiles/files/5104926290.pdfIn PDF document text
    • http://www.barbazan-debat.fr/ckfinder/userfiles/files/35507669956.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161319408c3081---75432331295.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/vapitatut.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132b852665b7---dodol.pdfIn PDF document text
    • http://stonebreaker.at/17473533166.pdfIn PDF document text

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