Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd920a5d3ea9bffb…

MALICIOUS

PDF

53.3 KB Created: 2021-07-02 10:58:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9eb60dc25a0cde52c54d7dc3235a77d8 SHA-1: 97fddda49b2aa982829c578a81904a8a5d31ec97 SHA-256: fd920a5d3ea9bffbe99b083f66686ff7c0b5d5761a30ffb72e5b3567f29a1146
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous links to compromised websites, indicating it functions as a link farm to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The presence of multiple distinct hosts and the use of disposable hosting for some links further support a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5591

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://greatnice.club/updatefiles/file/selidozomimepusepakuta.pdf In PDF document text
    • https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/2jq933507v7otan5mv0s2o7r1a/55127604906.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/6fa4f529c509e6af527c0f1e6352e0af/14258746191.pdfIn PDF document text
    • http://xn--80aikni6a0b.xn--p1ai/images/file/40091353755.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd8b346ee4---616049932.pdfIn PDF document text
    • http://kondicionery-krasnogorsk.ru/upload_picture/file/wezadonumopuwoguted.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/a883b119112079e67a8fc2694a5b6957/58234332586.pdfIn PDF document text
    • http://wwpokebar.com/uploads/files/selib.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160ca5ae05d20a---bubolifapinagevuzivas.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609cfb6ae3250---47025123655.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160abff34959cd---besexudefawo.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/ecab018a1ecd260af33d8cfb2d013562/vevesubazevewokitamawipux.pdfIn PDF document text
    • http://woodwork.pl/ubezpiecz/obrazy/file/4498706770.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/5jha190m7bj57l0isd80kh3tr3/38730021619.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608506b02882f---lekubanovejiwovav.pdfIn PDF document text
    • https://upchealth.net/wp-content/plugins/super-forms/uploads/php/files/3e7a0f5f40a54fd99d5f08a6e49b3467/76708364588.pdfIn PDF document text
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/66feeee4dcd3998617c34ebee09deda9/25944423696.pdfIn PDF document text
    • http://jestbogiem.pl/app/webroot/uploads/file/38593829290.pdfIn PDF document text
    • https://okud-istra.hr/userfiles/file/mujozofesubomupif.pdfIn PDF document text
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/b15fc2b3a5b5bed4edeccc077f839b70/vejelixabeloxakon.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aaaaaa86d5---xobumizukokenuvuwu.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/354864a1d64812904f595a9f3892bbf7/wenofefadovefoxotawen.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ad41868fc---jexikoxawizomeb.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/a78sc529oj8nl90p4li0clfqhr/16130526210.pdfIn PDF document text
    • http://bidwoodmachine.com/d/files/vuzaxivolikezeniz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=project+budget+spreadsheetPDF link annotation