Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4ba3ca15920a21…

MALICIOUS

PDF

66.5 KB Created: 2021-07-22 18:11:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 3aa24a2a527dd892bd41db403d95d270 SHA-1: fba4f83863d6f153db9cad3ac1d7b29c7bf75fcf SHA-256: 9d4ba3ca15920a21dd4d79f8350ea729d934b44e74dd82fb6f18f7c2b69225aa
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised WordPress sites, a common tactic for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports that the document's primary purpose is to host a collection of links to potentially malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9552

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 https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087ed19a01f2---53745468189.pdf In PDF document text
    • https://www.reflectionuk.com/wp-content/plugins/super-forms/uploads/php/files/euihhvv4vsthehjk4ci24cjgds/xakosuperosegom.pdfIn PDF document text
    • https://toptenstudy.com/upload/files/BodyFile__60CD09098B6D2.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/93223966c4ff9eb0bb0987eb240ca732/8290057649.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bc3a3cf591---fuxuli.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/c768dbe3eced0b54430798d4effb55bc/xifekonubawibafaxudaruz.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/16074119b563ad---xumusamamodato.pdfIn PDF document text
    • https://coimbatorepressclub.com/FCKeditor/userfiles/file/gazodezodelupid.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d35769a887---varebaduvetomegofulizi.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a880e9150---40626635231.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/a5ba908e870ee49a953919f76af3f67c/bodapukelog.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/943083126fc36478cb9fc39a0e0e9e86/14697928408.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/21696522144.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6952e0ed59---30011987316.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/9c9113b6a39985df998c224455bb3cb5/80324327745.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/16086a2c284817---63753862577.pdfIn PDF document text
    • https://gruntbudowa.pl/files/file/vuzoxu.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/xakakanuza.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/75276236898.pdfIn PDF document text
    • http://srihemkuntschoolint.com/slbdavbatala/userfiles/file/68634135464.pdfIn PDF document text
    • https://blagoustroystvo24.ru/ckfinder/userfiles/files/gemeduwoduromesivilomivi.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/l8pt9khvab5cmj2fn08vin74q2/21619832763.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/wutusamif.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/3168861349.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=1024+bytes+is+equal+to+mbPDF link annotation

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