Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d92fb22c01a178…

MALICIOUS

PDF

62.0 KB Created: 2021-10-19 00:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 050f0013a6b2fb4f26531e280445eb98 SHA-1: 74c400daf265777474e61a7a1314068ce12138af SHA-256: 45d92fb22c01a178bb82b624f617579dfaa3e843c2fdb926b6c5cf70d131eac2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm or phishing lure. ClamAV detected this file as 'Pdf.Phishing.Trojan', and ML classifiers also flagged it as malicious. The presence of embedded URLs and the nature of the heuristics strongly indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5895

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1615596d2315a0---43116144517.pdf In PDF document text
    • https://cqhuaan.myhost360.cn/upload/files/09-06-02-07-11-81.pdfIn PDF document text
    • http://cappellastudio.it/userfiles/files/merufarukude.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/26700307007.pdfIn PDF document text
    • http://support-cmu.com/filedata/file/7148079312.pdfIn PDF document text
    • http://fohow77.ru/upload/file/77558805936.pdfIn PDF document text
    • http://problemconsulting.com/img/download/files/86753855015.pdfIn PDF document text
    • http://apartament-krokus.pl/userfiles/file/48618238204.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1614fc4b94f7e4---sekebebigozavizir.pdfIn PDF document text
    • http://versobrokers.eu/userfiles/files/23133795404.pdfIn PDF document text
    • http://applecentervn.com/uploads/image/files/97261247294.pdfIn PDF document text
    • https://oxfordjsr.com/userfiles/file/lexunatumoga.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/e2e73faee57ff2091f16cad3523b51d0/rujonew.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614c14b331b27---40601955246.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/2n37cvatc3203sse3udtn1ep12/37846733842.pdfIn PDF document text
    • http://metallpress.info/files/mobowijumegeliniz.pdfIn PDF document text
    • https://rmp-familienanzeigen.de/cms/files/gozaxipasuwobuzadiv.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/29194fc84742e88a4ba4f5ae0f9e1e81/83218750710.pdfIn PDF document text
    • http://maekalocal.com/Maeka/UserFiles/File/58161668284.pdfIn PDF document text
    • https://soechi.id/userfiles/file/99344618488.pdfIn PDF document text
    • https://kaparatt.com/images/File/sifosejarafixoxirer.pdfIn PDF document text
    • https://ms02bet.com/contents/files/34629164889.pdfIn PDF document text
    • http://bobas24.pl/Upload/file/45574869300.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/tgwjJlsMqHc/uplcv?utm_term=where+can+i+buy+a+dog+crate+for+cheapPDF link annotation

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