Malicious PDF — malware analysis report

Static analysis result for SHA-256 325fa3f079a109e4…

MALICIOUS

PDF

54.0 KB Created: 2021-08-20 02:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 8e22c4ac36f25c38db84859270f4707a SHA-1: feb074901fe23b31ccf0430c961d267388277f46 SHA-256: 325fa3f079a109e40944856c5fcad9d6d2c1f5be7263ce1fa0af4bfd2ebe68bb
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised WordPress upload directories, suggesting an attempt to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of numerous links on disposable hosting and compromised CMS platforms reinforces the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9762

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://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d52f05a2a---84885830188.pdf In PDF document text
    • https://bloomlight.pl/_bloom/file/31406961787.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e64c1cab90c---98235416168.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607717d61c299---gigobuxibitaresiriri.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a84ab68520c---rufuvi.pdfIn PDF document text
    • http://haphadoor.com/upload/files/boditidanogo.pdfIn PDF document text
    • https://luminex.pl/upload/file/66205361444.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf4d7b9119---fumodaxijakamaxawetoxax.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-5-7/20210507032136859875.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/a5mlos7h0ilesk87p4t5vri5e0/jolurezezifodeloxewegis.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/e68dtcn5upv90h90muiqtne20d/14698859923.pdfIn PDF document text
    • http://aep-tc.com/cache/fck_files/file/zadeloderesopofovuputu.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160986d95cf9f2---74045618199.pdfIn PDF document text
    • http://mega-treid.com/userfiles/files/siruxikexogavudexatupep.pdfIn PDF document text
    • http://goldenteriyaki.com/uploads/files/48504247264.pdfIn PDF document text
    • https://istocdukkan.com/userfiles/files/zubufukisivifer.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cb1201ccdd7---83264821601.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=hack+for+among+us+android+downloadPDF link annotation

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