Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f960fad555f0fc…

MALICIOUS

PDF

55.7 KB Created: 2021-08-16 06:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 211c0cf290bdc2be24bc1bb5a1d6302c SHA-1: a2418f28852db89c4a1a53d49b1316a4a12cd9e2 SHA-256: d3f960fad555f0fcd87265d0974c9b27c0fe6c3a360a0e2e2f3d526e5b56577b
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. It functions as a link farm, containing numerous URLs that point to various domains, some of which are hosted on compromised CMS upload directories. The primary purpose appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5388

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://sibois.eu/userfiles/file/47497205792.pdf In PDF document text
    • https://noticky.net/akce/fotky/file/24074000258.pdfIn PDF document text
    • https://pasarantogel2.com/contents//files/wudufiti.pdfIn PDF document text
    • https://art-gallery.mn/uploads/files/gituzarusurulu.pdfIn PDF document text
    • https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/59ou7t4iqvavrqvlvvfo2cr5b1/tofajobomijijen.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/h5q1dmvhk866mdh7erk17h0keh/kemobow.pdfIn PDF document text
    • https://joebalogh.ro/imagini_ws/nexopabumut.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/84017513675.pdfIn PDF document text
    • http://tiszaikaland.hu/upload/file/48037886764.pdfIn PDF document text
    • http://majortaylorride.info/images/uploaded/file/18768686087.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d826196b1---wiwasofufumabudepumininif.pdfIn PDF document text
    • http://frappsreagent.com/upload/files/61767494393.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/16078fccc58ae2---dijededowuzawovafesimezam.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/f1c9117b87560eb8d98ad6076a2d8eb6/62454261616.pdfIn PDF document text
    • http://dentalclinicbangalore.com/uploads/befulapixumazavajusiz.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/59007270756.pdfIn PDF document text
    • http://nadiadsa.org/userfiles/file/totifuxoxufaxajubop.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/04511a5506c3b612feab3d5e17180fc4/30466788548.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/599b7d550c696138ad60221eb6b0a0a3/tutotezalup.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/51031613484.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/rea9r53q899d3fem3ngaa4dsb5/zumolarowupif.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609a80663b3c4---50752440888.pdfIn PDF document text
    • http://vinaktv.com/storage/ckfinder/files/wonugewi.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7af447facf---93746618923.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=amar+ujala+newspaper+in+hindi+pdfPDF link annotation

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