Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce23e9d07f0c3b7d…

MALICIOUS

PDF

41.2 KB Created: 2021-09-13 12:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: b331618e40b33dcd97f33b3e7cedecff SHA-1: d39c9f66c0435b10e2c3bb79afe663a29c87325b SHA-256: ce23e9d07f0c3b7da27b78a48f05a0c98eb8acde28a7564b39f775b99dac4ba3
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and small file size, typical of a screenshot designed to hide clickable elements. It contains numerous links to external PDF files hosted on various domains, suggesting a link farm or redirection mechanism. ClamAV detection and ML classification further support its malicious nature, likely serving as a delivery vehicle for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6964

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://traveletrust.com/basefile/traveletrustcom/files/zigixosibufez.pdf In PDF document text
    • http://sys-svinding.dk/userfiles/file/muganopajagovejug.pdfIn PDF document text
    • http://grapes4u.ca/sites/all/sites/grapes4u.ca/files/68635903724.pdfIn PDF document text
    • http://www.radio-kum.si/data/files/jogigedemunigixanaxox.pdfIn PDF document text
    • http://didula.com/img/file/8017181361.pdfIn PDF document text
    • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/3755ceb0a76516d0191dd9d4a6c1008b/kuriwebogo.pdfIn PDF document text
    • http://nadafashionbelt.com/Uploads/file/sadetonipokosobivu.pdfIn PDF document text
    • http://ventexevent.se/uploads/file/50666807002.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134f84679b06---jafemujepig.pdfIn PDF document text
    • http://v-lukomorie.com/uploader/files/gamejutomur.pdfIn PDF document text
    • https://samsungklima.net/upload/ckfinder/files/movelavidelorofalugejam.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/jigoge.pdfIn PDF document text
    • http://hoteldanang.com/uploads/images/files/gopevubovegijujadi.pdfIn PDF document text
    • https://ostrichtours.com/ckfinder/userfiles/files/dapixamigomepezugilod.pdfIn PDF document text
    • http://arebiatours.com/uploads/files/ruxujedojivejiwazolurasiz.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/sesililopiwazebe.pdfIn PDF document text
    • http://makrostal.pl/user_images/file/mesap.pdfIn PDF document text
    • http://paulgraphics.paulsfashion.in/files/86396767690.pdfIn PDF document text
    • https://ecodiagnost.com/ckfinder/userfiles/files/xaviwelexave.pdfIn PDF document text
    • http://rioairporttransfer.com/ckfinder/userfiles/files/futoganaxoxufagow.pdfIn PDF document text
    • http://dom-2000.ru/ckfinder/userfiles/files/71491186532.pdfIn PDF document text
    • https://nstoplana.rs/ckfinder/userfiles/files/50919373243.pdfIn PDF document text
    • http://unstitchedfootwear.net/files/file/81781797043.pdfIn PDF document text
    • http://tfe-design.dk/userfiles/file/46831656715.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=company+domain+android+studioPDF link annotation

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