Malicious PDF — malware analysis report

Static analysis result for SHA-256 2de0e7072f0981a2…

MALICIOUS

PDF

72.5 KB Created: 2021-09-08 11:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 612759d371825ab9857d88c69bdbee89 SHA-1: ef02b9c7a5070453af2b00d668303d1e2a104a78 SHA-256: 2de0e7072f0981a26c4567db9922a34a9fb1758b32516fa4bbd5d9aa00fbc85c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to direct users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing or content-luring campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/a0e4c190f129bff79132d0200053dd0a/suzogomimelagowasa.pdf In PDF document text
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/d228d14938b5b06838b4b759f95986b4/45398707093.pdfIn PDF document text
    • https://theipbuzz.com/images/file/26714667084.pdfIn PDF document text
    • http://xdata.pl/app/webroot/img/ckf/files/gixotodazinakuvadu.pdfIn PDF document text
    • https://smlstripedbass.com/home/rock/public_html/ckfinder/userfiles/files/sodejalalubanagozixogo.pdfIn PDF document text
    • http://wearefamilypalestine.com/clients/3/3b/3bc38fc23f9ffb54b20226cbd6ad6ce3/File/61608958906.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/0ktupn1efolijkfcg27kg7klbf/nikobakox.pdfIn PDF document text
    • https://kingdomdatesuae.com/userfiles/files/jomupofumosapevon.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/25c2a3bd33224e64748d09a2fd3d7567/18563594117.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160851df16a836---28878358991.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/60074310074.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c87d45298ca---tafaxesinevoxexilag.pdfIn PDF document text
    • http://stlnsk.ru/uploads/file/takowugumusejenoku.pdfIn PDF document text
    • https://roshindelivery.ae/userfiles/files/99479392278.pdfIn PDF document text
    • https://costabravas.com/uploads/localidades/files/wumebilikanofadaguxew.pdfIn PDF document text
    • http://mea-travel.pl/userfiles/file/suditotaxow.pdfIn PDF document text
    • https://clubsportedinburgh.org/userfiles/files/88096729544.pdfIn PDF document text
    • http://liily.jp/upload/file/20210817062913.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/25252434158.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16092899217eac---tumow.pdfIn PDF document text
    • https://radmangroup-ye.com/rgfiles/file/57135709390.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bedad27911d---46527559300.pdfIn PDF document text
    • http://kasargod.net/uploads/file/78578948834.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=brunnstrom%27s+clinical+kinesiology+free+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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_off0000ba00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA00 11356 bytes
SHA-256: a40f866ced680fc975370b04d15ae9b92d107a79fa0372d7878672d02e219b6b
font_01_sfnt_off0000d4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A4 15432 bytes
SHA-256: e62e99b4a090d8e186a7b093d0a58c18a49324635b8aafde2dab13ad8e293848
font_02_sfnt_off0000fbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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