Malicious PDF — malware analysis report

Static analysis result for SHA-256 a392f83d9e1e569e…

MALICIOUS

PDF

50.4 KB Created: 2021-09-11 18:10:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 0cc9348efdf9bad427a1f2e6356ac93c SHA-1: 23c90aae8f0827410ab80ccacbb8518690df991c SHA-256: a392f83d9e1e569e33ba35bd370eca2c99832ec891d70981316b8fd92a4c09d8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to distribute malicious content or phish users. The presence of numerous links on disposable hosting and the use of 'utm_term' in one URL further indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6227

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://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133ff31704bf---batob.pdf In PDF document text
    • https://www.borzabadi.com/ckfinder/userfiles/files/jusilasorevuwe.pdfIn PDF document text
    • http://yokohama-model.com/userfiles/files/dexonogenif.pdfIn PDF document text
    • http://elitvorota.ru/f/file/zesivonapijokunudoki.pdfIn PDF document text
    • https://jucariicopilasi.ro/app/webroot/files/userfiles/files/noduxogewod.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-9/file/5220839081.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16137612cf12e9---6075162514.pdfIn PDF document text
    • http://drtamerturan.com/file/30250006225.pdfIn PDF document text
    • https://ipic.vn/userfiles/file/pekuxozevoda.pdfIn PDF document text
    • http://cbcom.fr/ressource/site-image/files/47756281820.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/ssrv4l032gngukmrlh5t1sq2l6/waluja.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/4cbcbdca90b67604afc2457a353d9833/fopemojuvupenotuwebet.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/161310dfbafef6---71378574956.pdfIn PDF document text
    • http://agilesolutions.in/uploads/40804126875.pdfIn PDF document text
    • https://charterfori.ir/basefile/charterforiir/files/3967194279.pdfIn PDF document text
    • https://muacash.com/webroot/img/files/xaparituzobekuvorilodu.pdfIn PDF document text
    • https://alev.az/userfiles/file/71015170262.pdfIn PDF document text
    • http://siamsankyo.com/Uploads/file/tuvijotolirovedotoleb.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612f99ef73024---7057266489.pdfIn PDF document text
    • http://circuitoinsulargc.com/documentos/file/84510972739.pdfIn PDF document text
    • http://thy-environment.com/userfiles/files/76885423909.pdfIn PDF document text
    • https://treasurehunterdetectors.com/ckfinder/userfiles/files/39953192727.pdfIn PDF document text
    • http://eamenfaraz.com/cache/fck_files/file/kodedoporarew.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=football+manager+2020+mobile+apk+downloadPDF link annotation

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