Malicious PDF — malware analysis report

Static analysis result for SHA-256 0624531d426aaad7…

MALICIOUS

PDF

53.9 KB Created: 2021-07-20 00:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 52fa0eb65860552ccf84e6f92592b2ea SHA-1: ecab8dd0e9e9eaf2ce88bbc21173e8fa6b35d05f SHA-256: 0624531d426aaad763b026b5b5dd16c5817cfcf79cc8a2b296865c002b37e9a9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to compromised websites, many of which are hosted on disposable domains or use WordPress upload vulnerabilities. The ClamAV detection and ML classifier indicate malicious intent, likely to lure users to download further malware or engage in phishing activities. While no scripts were directly extracted, the structure and URL patterns strongly suggest a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5731

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://www.hotwaterfactory.com.au/wp-content/plugins/super-forms/uploads/php/files/d5627e39efeba6769aa3c6ea0ffb24a0/kosumisovepotukazejatur.pdf In PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087fd59ccff2---ziwenatefodesinolawo.pdfIn PDF document text
    • http://iccj.jp/images/uploads/fckeditor/file/63339936778.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/861952d1b55d0e57dc06a294e547ef79/rewakepemozevon.pdfIn PDF document text
    • http://blevy.com/ckfinder/userfiles/files/83981391581.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097c85b29f72---gibazisalozexila.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b301707e9---84558968025.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/3c95131f46dddb346a15a1ad0f40fc41/dazoxajibanupegeko.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/c29f2e4a520c4a6b056f386663f687d1/gonufaloluxususawobedav.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b852c223166---18714179929.pdfIn PDF document text
    • https://coluer.ir/documents/file/nekeranewefupazefipobine.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ab4f92f26a2---jetane.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160805d23009bb---nubamiromivev.pdfIn PDF document text
    • http://liebherr-tr.com/userfiles/file/40386541189.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608100916d954---dutizutebad.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/16095036796752---wusarevan.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/687ee337b8d4cc643b3c026f4f5fde02/95631964528.pdfIn PDF document text
    • http://medtravel.lv/images/hand_uploaded/files/99124921503.pdfIn PDF document text
    • https://standardpromotion.com/images/upload/userfiles/files/migor.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/22786358287.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/ieneevl9sitjn2tvduq49ao1j7/34600890331.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16097ff64d99f8---loniloje.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=criminal+trial+examplesPDF link annotation

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