Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f8452345a931756…

MALICIOUS

PDF

48.4 KB Created: 2021-09-20 05:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 170278e22abe281540ef05fb949bb624 SHA-1: 8f2160f96adb3771193a13e882cb7fc27f0db6bf SHA-256: 3f8452345a93175609d2b6df8bd0ca432c3ab94ec2369e13db11d33765201ea2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to a link farm, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8987

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://alice-immo.com/userfiles/file/62448754301.pdf In PDF document text
    • https://reparation-mobile.net/userfiles/file/zuwipofabobosikotobuza.pdfIn PDF document text
    • http://originalbau.hu/imagesfiles/25284405781.pdfIn PDF document text
    • http://canissapiens.com/images/uploads/file/3641980546.pdfIn PDF document text
    • http://www.greddy.com/admin/common/ckfinder/userfiles/File/gilipawonixezik.pdfIn PDF document text
    • https://www.displaysdirectaustralia.com.au/application/third_party/ckfinder/userfiles/files/46796845797.pdfIn PDF document text
    • https://tranhtreo.com/images/ckeditor/files/gepatewu.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613baee857cca---dakogetiwa.pdfIn PDF document text
    • https://araprinter.com/ckfinder/userfiles/files/gatojomikifuvemubu.pdfIn PDF document text
    • https://fix2go.info/userfiles/file/mubaxopidikabakaxubidoxar.pdfIn PDF document text
    • http://taemyung.com/data/upload/file/vupufedexinexat.pdfIn PDF document text
    • http://schokoladenbrunnen.de/idata/81736072867.pdfIn PDF document text
    • http://csc-vietnam.vn/uploads/userfiles/file/14560516341.pdfIn PDF document text
    • http://constantemail.com/userfiles/file/163071913755209409424.pdfIn PDF document text
    • http://villaelen.it/userfiles/files/zevoxemam.pdfIn PDF document text
    • https://indobaliart.com/sitefiles/file/85990882908.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/88628771427.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/652cb574f3a234d011ceef0c7d4cad78/nesodumipedud.pdfIn PDF document text
    • http://photo-preiss.com/upload_files/files/sebaverinerifazatige.pdfIn PDF document text
    • http://hoaiduc.edu.vn/ckfinder/userfiles/files/54057936915.pdfIn PDF document text
    • http://skia22.ru/pic/file/lilixo.pdfIn PDF document text
    • http://1544-7419.net/upload/fckeditor/file/31136306227.pdfIn PDF document text
    • http://bike-aholic.com/UserFiles/file/73824005465.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=super+app+lock+fingerprintPDF link annotation

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