Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c05cac04bf29e5b…

MALICIOUS

PDF

159.7 KB Created: 2021-08-13 23:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 947f8a5a7df773fd7b45925550509be5 SHA-1: 30e5263edb6810d02aae62f1d66b112ee13a7d61 SHA-256: 7c05cac04bf29e5b4430b4a52320afdfce0deddf57e61687ad1267bb338a4261
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly support its malicious nature. The file's structure and URL patterns are consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8508

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://digireg.pl/upload/jifadime.pdf In PDF document text
    • http://staractivecollection.com/resimler/site/files/ludukajofesibo.pdfIn PDF document text
    • http://stoewebdesign.no/userfiles/file/58165047037.pdfIn PDF document text
    • https://gikguamerica.com/userfiles/file/dejob.pdfIn PDF document text
    • http://champaigncursillo.com/userfiles/file/wabagobifewitapiwexexofa.pdfIn PDF document text
    • https://studiorampinelli.com/file/78692488194.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5ba6528e7---tegagorovi.pdfIn PDF document text
    • http://sarljarry.fr/userfiles/file/jowuduketigufinapepaga.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/97758944866.pdfIn PDF document text
    • http://inlovehuahin.com/file_media/file_image/file/dutus.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d19a57a855e---7580597579.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c87787dce0f---8271727334.pdfIn PDF document text
    • http://www.hzkontejnery.cz/ckfinder/userfiles/files/74960700385.pdfIn PDF document text
    • http://akifkasaboglu.com/esatfisek/images_upload/files/dokorutesedisix.pdfIn PDF document text
    • https://tarzminder.com/resimler/files/5464285195.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160aaa4dadadd8---60016735299.pdfIn PDF document text
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/039f671f47d714559b3b529c74984679/14124038611.pdfIn PDF document text
    • https://interior-mark.com/ckfinder/userfiles/files/bubiwonofuk.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c27b1c13c51---ledijada.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/repovamazoneluxu.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609ddb22e11af---sigoxugu.pdfIn PDF document text
    • https://yaofangpeixun.com/upload/files/68290324687.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/3rfruduljl6a6hvtavvsdbuoh0/22227899753.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/62d8ad8c14d9856042e7251384dc8c20/debob.pdfIn PDF document text
    • https://volgogradexpo.ru/ckfinder/userfiles/files/79598445345.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/62d028e910cf9c45e77a27413dfe166f/fosutubebebutoxesowovut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=ishihara+14+plate+test+interpretationPDF link annotation

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