Malicious PDF — malware analysis report

Static analysis result for SHA-256 796f740b7dbc8d3e…

MALICIOUS

PDF

66.2 KB Created: 2021-07-28 04:14:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7119438cafe93d37908e209096b40a7e SHA-1: 87707ae26338dfd16046571e09546e3e8c3db5e9 SHA-256: 796f740b7dbc8d3e1d162d2a4da8fe8c208048355c02205f0aa9e0830adff522
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with multiple URLs pointing to compromised WordPress upload directories. While no scripts were explicitly extracted, the nature of the PDF and its embedded links suggests it is designed to lure users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9558

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://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16070589aab4d2---fekevarefixapopigemesemir.pdf In PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4g2sc9a5ue24lr9mcmmpl68566/70057995849.pdfIn PDF document text
    • http://beergolfers.com./blog/images/file/rovopinowupilileworavafep.pdfIn PDF document text
    • http://jumpinfit.it/userfiles/files/19253519425.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/235201aef351e724fffb51cacf607329/84322521997.pdfIn PDF document text
    • https://espaciocultivarte.com/ckfinder/userfiles/files/tupaf.pdfIn PDF document text
    • http://martom24.pl/martom/userfiles/file/wipanegasuzunubepusojal.pdfIn PDF document text
    • http://toyotarent.tw/FileData/ckfinder/files/20210617_AF9973218C5238BD.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/glpi3f1efc13omfbhr2n7oruc5/16059981864.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-5-1/20210501182901381720.pdfIn PDF document text
    • http://npi-management.com/ressource/site-image/files/sotevejafowozefaba.pdfIn PDF document text
    • https://xetnghiemadndanang.com/upload/userfiles/files/25483528566.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/g1957hkj8pgnjqq8ak42ponrkl/66643475113.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160abbcb1534b9---81533235633.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160851f7c9c574---75146546294.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609a801bafd7e---jekonofugex.pdfIn PDF document text
    • http://sh-ruiyangcpa.com/userfiles/file/2021-7///2021728513405819.pdfIn PDF document text
    • https://hagakure.by/upload/editor/files/zusuwonuzi.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/14185394376.pdfIn PDF document text
    • http://lblussana.it/images/file/66155886731.pdfIn PDF document text
    • http://ahchala.com/img/file/luworawax.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d5dac45695---88330706233.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/1524b97397e3bffec8568a471555ca99/zixez.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16093b2d206176---68200351409.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=element+3d+v1+free+download+with+crackPDF link annotation

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