Malicious PDF — malware analysis report

Static analysis result for SHA-256 601a28f8ab0cf245…

MALICIOUS

PDF

67.8 KB Created: 2021-09-02 18:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 01ae88b37bb0308bf2bfb44e3732f987 SHA-1: 96fd15b3e2894fad5a62eab766a9b3a4d5e783dc SHA-256: 601a28f8ab0cf245f3770d6fe0df517beffabcd5f050bd036ec4064699e3351b
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. Static analysis revealed numerous embedded URLs, many pointing to compromised websites or disposable domains, indicating a link farm designed to lure users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically flags this behavior, suggesting the document's primary purpose is to redirect users through a network of potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4988

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://coretry.ru/uplcv?utm_term=manual+microondas+panasonic+piccolo+nn-s42bk PDF link annotation
    • http://amuseonline.com/absite/userfiles/file/84580377789.pdfIn PDF document text
    • http://china-zzld.com/uploadfile/file///2021071016271175.pdfIn PDF document text
    • https://spvi.cn/filespath/files/20210817222430.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/26527964213.pdfIn PDF document text
    • http://janandpoos.com/clients/872640/File/refikotupirujurev.pdfIn PDF document text
    • http://nhasachthunam.com/upload/files/77263598355.pdfIn PDF document text
    • http://kiuanai.com/userfiles/file/guzekofosudakururi.pdfIn PDF document text
    • http://centroolosprato.it/userfiles/files/47370703696.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f34e1a756e---28792213548.pdfIn PDF document text
    • http://prochem.vn/images/uploads/files/51510225687.pdfIn PDF document text
    • https://rieker-consulting.eu/files/file/rirutiteridezovaxudife.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/e7dd72a1eaf61c81c786b3adaf031adc/xufeziwaguda.pdfIn PDF document text
    • http://wawabed.pl/uploads/userfiles/file/6860340462.pdfIn PDF document text
    • http://lamelove-zakryti.cz/userfiles/file/91466514096.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16111e9a816324---dogepagefujelakipamir.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/6547388343.pdfIn PDF document text
    • http://drthchowdary.net/userfiles/file/33654085309.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d43970762---7803510100.pdfIn PDF document text
    • http://tavaszitura.eu/userfiles/files/61327434235.pdfIn PDF document text
    • http://giovanniseneca.eu/userfiles/files/68839830849.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160739ae110ebf---gasexubufofuwexozosilupo.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160841e26af6d4---gufoj.pdfIn PDF document text
    • https://www.thc.gda.pl/ckfinder/userfiles/files/86366895558.pdfIn PDF document text

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