Malicious PDF — malware analysis report

Static analysis result for SHA-256 eafb18d5cf4faa58…

MALICIOUS

PDF

66.4 KB Created: 2021-07-03 17:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 5d2ab9d2b63f06eefe77de24bc17018b SHA-1: 86bbcdfc71ff17fa84de2a8141a7bb57b7b3da1e SHA-256: eafb18d5cf4faa580c0897a018d6951629fdddcb107a4b56aa217af92b88b9a9
154 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to domains that appear to be compromised or disposable, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, and the document body was unreadable, but the heuristic firings clearly indicate a malicious link distribution pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5460

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://o-dance.com/upload/files/85118953259.pdf In PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092c38b08819---nujogirabawujo.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9cab1d65b---belezewalezuloruse.pdfIn PDF document text
    • http://bigsvatcharasith.com/userfiles/file/64342059819.pdfIn PDF document text
    • http://pkynfe.net/userfiles/file/gekeviwejunagoxak.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/4j1kc341rm2pliis5ek7f2q2lr/pezuguxijetutazinole.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/3d06109aa0de9ca207c83ac388a4c5e3/pugegeborujeruruxigi.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ca000151b06---39055763268.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/31670e8e1eac54d80117e83ad5603bbf/xazutepajukumod.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad75dde419d---55512716002.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160734dcdcf5a5---puvilugik.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/6evpcduq8tohgftqc12k5hf1r2/tuxadibojagag.pdfIn PDF document text
    • https://serka.com/serka/upload/files/27476637139.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/ksvqua2l0ledeph4a1rsdnh4og/99998774472.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160daa2824a2d0---27806194001.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/b693b0be38832fd784fbbf0548167ed7/xivituvejumu.pdfIn PDF document text
    • http://polloricowings.com/uploads/files/19833086566.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16075f88fb163f---4250901055.pdfIn PDF document text
    • https://tolgyesvolgy.hu/userfiles/file/99543745310.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/008247ad5774adf7597920dd547e222a/kapunumugega.pdfIn PDF document text
    • http://brilliantsolarpaneling.com/userfiles/file/66680046588.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/66466471961.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160788a457f278---pinotewepujuwuxogeruj.pdfIn PDF document text
    • http://patrick-jardinage.fr/ckfinder/userfiles/files/bepopisonujomugisapaxabu.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/707e6s6vjmem97vum8sgggcns7/sovejirud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=8pm+pst+to+wibPDF link annotation

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