Malicious PDF — malware analysis report

Static analysis result for SHA-256 22eab1adab323381…

MALICIOUS

PDF

106.8 KB Created: 2021-07-29 19:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6b205809cf691e5bfe5379246ed635f9 SHA-1: fb42d1e5392a295817c06f63d562015dd4c28ad7 SHA-256: 22eab1adab32338174a763270114addd513e4c0c3deb4620118018a36d012b3f
154 Risk Score

Malware Insights

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

This PDF was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple external websites, some hosted on compromised CMS platforms. The embedded URLs suggest an attempt to lure victims to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7038

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098a2da4f752---lurige.pdf In PDF document text
    • https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/0afa71d156f385cd293891f88abee2a6/57094304120.pdfIn PDF document text
    • http://szalkasszorutacskok.hu/app/webroot/files/content/files/75651079107.pdfIn PDF document text
    • http://turksebruiloften.nl/userfiles/file/fixobomevegudarus.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/d2567bbf8e733473491e7bf65a6d8153/57251875495.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094c7ccb684f---57625912630.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160be88795e4b8---61766459747.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16077c1c4dadd4---82980752721.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/69447d82be3e99da96ba96cb2fa46efe/visusid.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/21d62dc1d2d6efe1fbca911e8e8faf6a/jorowopumileru.pdfIn PDF document text
    • http://clinicaveterinariasangiacomo.it/userfiles/files/82186050427.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bad8fc5b9a---kekokuxoguxapudejiseka.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a2bf05b68f5---30609422043.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/eaacd5b4926fba84f9bf1508bc821a1f/nesigipipakesibapowesu.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/dc1769cd738b1c4baf0020ceb0c8008c/kegajorolekoferujuv.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609a3b990289b---56159581409.pdfIn PDF document text
    • http://mondoacquapiscine.com/userfiles/files/18945093519.pdfIn PDF document text
    • https://kme.pl/global/app/webroot/uploads/file/16230679164463.pdfIn PDF document text
    • http://azseal.net/uploads/userfiles/file/munijewosusatasawij.pdfIn PDF document text
    • http://learningkey.org/userfiles/99814903421.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/87330499784.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608c8d7ef36d1---jutevesiz.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/c79406629aa1cd8ce4fb002d08112224/11156660363.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/dq8hq2ufjkkrol4mspr69ml6ou/bubimifilifokivokixaluza.pdfIn PDF document text
    • http://ateliergermain.net/sites/default/files/file/pewadevuxopodolon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=sodastream+cylinder+refilling+adapterPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000142ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142EF 18460 bytes
SHA-256: 0236e1bfa689acc603fde975742e563cd895c765bb68b0a650371f5257e67a9a
font_01_sfnt_off000173b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x173B6 11152 bytes
SHA-256: 9cf3654bbd7297918ab6266f2ba27b9d4c5ac6b4e2e530b861fa7a05906b03d5
font_02_sfnt_off00018d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D8D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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