Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb647456ef7656aa…

MALICIOUS

PDF

55.8 KB Created: 2021-05-14 03:35:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ac5c58a7d751b08a498987384862b64 SHA-1: 833bdcdebda5c9ae8d6accc91c716943d27c3043 SHA-256: eb647456ef7656aa16d46e8a76a858d2193233c3470eab25106eb676d616b68a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV. It contains a link farm pointing to compromised WordPress upload directories, suggesting it's used to distribute further malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution campaign, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7674

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://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16096942f202aa---kebosixe.pdf
    • http://www.aadhar-interior.com/userfiles/file/73164922871.pdf
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1f2769f5d---16777537349.pdf
    • https://www.saammohaseb.ir/wp-content/plugins/super-forms/uploads/php/files/c8be29c9cedd33c4038b11625470d71e/86099111406.pdf
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/7bf3814c12411b54b354cc217f102058/31123066617.pdf
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609b80eaa7075---nesebijotemewekuginotagu.pdf
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608187e8cae0d---jewigefepu.pdf
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/ffdb4826264bbfc5de9f39cc56774688/32196507587.pdf
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16093cbf7cb9ed---sixirovirusilewamixi.pdf
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160756fe076b4d---63080280549.pdf
    • http://apluskleaning.com/admin/images/file/milefejatipebedoz.pdf
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160869c59acfa3---99158587102.pdf
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16088c02441969---woxemomipofazuputajep.pdf
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/7931fa042de3f5a2e6a6b914e40a5db4/polakilovilorar.pdf
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160978fd63c8a5---48973131882.pdf
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16079fb73b9463---ravubuzafajewonuxitiwos.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=date+phpmyadmin+format

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