Malicious PDF — malware analysis report

Static analysis result for SHA-256 489af3a53e282fea…

MALICIOUS

PDF

71.6 KB Created: 2021-09-01 13:26:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 4d144e882888fa02fec31adc775ab893 SHA-1: 79e28977a6836ddc6d2e28e11e6228ff754ad717 SHA-256: 489af3a53e282feac36be4eceb9ccbd6b566b3d625d87b6292052db11341e61a
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://skyrunarser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210615203114401211d9payb.pdf In PDF document text
    • http://agriturismofattorialucciano.it/ckfinder/userfiles/files/gopurijezidu.pdfIn PDF document text
    • http://neurooperations.com/ckfinder/userfiles/files/67244064329.pdfIn PDF document text
    • http://eviljoy.com/UserFiles/File/40593315478.pdfIn PDF document text
    • http://bsl-trans.ru/admin/ckfinder/userfiles/files/vofasamujemeralo.pdfIn PDF document text
    • http://hodinovysoused.cz/upload/file/tufakalezuvekokiwad.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/53146d0c4ceb5ce943e080c771891ec3/33466798922.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609bba2c27a6a---moginuvusino.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/698cd4c2bc707f95deb697ceaca2b91d/93658745357.pdfIn PDF document text
    • http://martom24.pl/martom/userfiles/file/81781028568.pdfIn PDF document text
    • http://kovacsoltvaskerites.hu/images/file/dusuxogamefulalagi.pdfIn PDF document text
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/7rdlpggrhj3o39dmjgm790vbcv/74866614497.pdfIn PDF document text
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/e998ece4e5c55c3491abdcc511ef6a61/62890091706.pdfIn PDF document text
    • http://retco.ge/ckfinder/userfiles/files/matodewimowitesekezediles.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608981323f9c9---68185037290.pdfIn PDF document text
    • http://rotarybrescello.it/userfiles/files/zalenodalopo.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/b703099d3c00bf65d23c6733bc646883/vedizalosavapaju.pdfIn PDF document text
    • http://musiclivemarsala.com/userfiles/files/jipemegawepo.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/43def2256ace2eb0eef7205d26cf7e0a/57619887299.pdfIn PDF document text
    • https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/pigesimobalijoxutiladuku.pdfIn PDF document text
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/7694776ef45811b691003bc3ce92879d/13054335736.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/1610979782e92f---91371583181.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5d684fa33---vumibelugabamibiser.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ea6ce553bd---42151868606.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9719118c7d41748fdcdcdf0429134292/putiladenebo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=how+to+download+gta+4+lcpdfrPDF 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_off0000bc70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC70 10560 bytes
SHA-256: 7b6c838321b5dad926f3b932f4a72438b71a9636af781bccdc1a9361c3de5944
font_01_sfnt_off0000d47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD47A 14300 bytes
SHA-256: 5f24ff2eb42ed7ae8ce88ec691149097e5ca10e29a66891d24baa85dcc7896e2
font_02_sfnt_off0000f860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF860 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1