Malicious PDF — malware analysis report

Static analysis result for SHA-256 a284822bbd6a9c98…

MALICIOUS

PDF

60.9 KB Created: 2021-06-28 05:33:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 8e74c6497a1a3023228fd157d67be29c SHA-1: d52db5421a04c363434598b7abc128b1a7295cbc SHA-256: a284822bbd6a9c981b7b359d52c9358cd8c3c76e74986fa9ef6dfcbe377232a8
124 Risk Score

Malware Insights

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

The PDF file contains a large number of links, many of which point to compromised WordPress upload directories. This behavior is characteristic of a link farm used to distribute malicious content or conduct phishing attacks. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4855

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://advantagelic.com/singhania/downloads/file/79971705043.pdf
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160756eb3c7456---27359331064.pdf
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/17aaa429793daaf3fdddbcba9712a9bf/89479845160.pdf
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16096c357da121---61421413329.pdf
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d7b3eb57c3---virazikilodobex.pdf
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c39452ba405---fogudojakanewe.pdf
    • https://suprizpin.com/calisma2/files/uploads/dowipebekamoda.pdf
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16087694248f82---49619183792.pdf
    • https://www.visitrwanda.com/wp-content/plugins/super-forms/uploads/php/files/d7d4f86de2209669d3c79ba38757b123/zogikorudi.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b73217bb82b---31982202276.pdf
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/0c69f7a77a1bfdbaeac6946f0368ed67/rewawavapi.pdf
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1608075f0a6611---dakexoluxukitovupu.pdf
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16080a76eed748---dozelixera.pdf
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/6a6a23069b570c4cf1140b183146e944/janusasesopoxowe.pdf
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/83bd166f229afdfe95d7651b129b6b32/wiwumabiwu.pdf
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082aa7875a2e---xepegemipuguravubaxi.pdf
    • https://mobile-translator.eu/app/webroot/media/files/87443289088.pdf
    • http://superfishinglewood.com/uploads/files/kiwidawo.pdf
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8de2495e90---fexajivimusaganiwikiza.pdf
    • http://gustosandvic.com/ckfinder/userfiles/files/34797891346.pdf
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/pqtrs97lv0pmho3gql5n534et6/6973328935.pdf
    • http://szpk.hu/_user/file/24107895519.pdf
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c148810121d---guwum.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=hypodensity+on+ct

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