Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba45838466ef5afe…

MALICIOUS

PDF

59.2 KB Created: 2021-08-20 17:36:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: b61706e6e242d744ea2641937d157fff SHA-1: a2ace16bc51290be690b4828f62df71b8aa98cde SHA-256: ba45838466ef5afe22bcf34a0de2ff15827f2bce4744c6a857e9bc2e0162310c
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9740

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://fsoa.cn/userfiles/file/98304074372.pdf In PDF document text
    • http://adaviestransportltd.com/userfiles/file/79938560770.pdfIn PDF document text
    • http://stroisvias.ru/userfiles/file/visuzulaxojopaxedibamo.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae372bd517c---23225290591.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bade37d9e97---sojow.pdfIn PDF document text
    • http://mrs724.ir/basefile/drtiketcom/files/tatosu.pdfIn PDF document text
    • http://driscollandgibson.com/images/edit_images/file/mifefabovedu.pdfIn PDF document text
    • http://vantaibactrungnam.vn/upload/files/mewilasusanibejadosasiloz.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/e9f678b71f9ecd5f8c8bdc13b823d8c9/renogafominibafimu.pdfIn PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/9e7b5ad1dbc7a023fe86f1f9ccfd02f1/zatekuwesajalek.pdfIn PDF document text
    • http://21cedu.com/pds/userfiles/files/63876219201.pdfIn PDF document text
    • https://kovtec.pl/eurostyl/photos/file/riwudolujig.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/b4a32d14f5665fe43522ffa99b2165c1/dajajufimutatojudugibubi.pdfIn PDF document text
    • http://kpdb.org/userfiles/files/girabijanapixov.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8b0033440---gojuzirivo.pdfIn PDF document text
    • http://charlotteellisscholarship.com/clients/a/a5/a56794a54ce3a7e2a8fdc514f00cf952/File/nulakavuxikisevidomon.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/64566943651.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/38334aef0119adbdf08e059f6e583f1d/xetad.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5c91072594---niterolugimosizudodetil.pdfIn PDF document text
    • http://vieclamquantri.net/upload/files/33660548553.pdfIn PDF document text
    • https://www.htlexpress.com/ckfinder/userfiles/files/dexopesi.pdfIn PDF document text
    • http://hart-metale.pl/gimnazjum/userfiles/file/baxixafinuj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=flight+simulator+2020+ratingsPDF link annotation

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