Malicious PDF — malware analysis report

Static analysis result for SHA-256 48eed9ee33ba58dc…

MALICIOUS

PDF

87.6 KB Created: 2021-06-26 06:41:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: b1504275a1662e74e7b6bc4b6b170c67 SHA-1: 992fc793d8e4b03b1753c945c1d170478b9afe6d SHA-256: 48eed9ee33ba58dce20b4df7dde99b43ae3ce13c0d813d3f048fb78c139770c0
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress sites. These links form a link farm, a common technique used to redirect users to malicious sites for phishing or malware downloads. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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 https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/9c59ee9fc22eea9c5a95086113e06454/kujezavaxib.pdf In PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160764eda0fe67---14468118714.pdfIn PDF document text
    • https://www.deuba.info/wp-content/plugins/super-forms/uploads/php/files/2ucdon2diptfm4ia915n6bmvha/92392448350.pdfIn PDF document text
    • https://prairieroseclothiers.com/FCKeditor/file/41346295562.pdfIn PDF document text
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/f0c90e631d00190eb3da126207604c03/77319733432.pdfIn PDF document text
    • http://esejsc.com/upload/files/53273695805.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/cbb9421d7947012389fa98ed13f37fa4/11522949792.pdfIn PDF document text
    • http://biotop-zamosc.pl/userfiles/file/xagoguvenajoneje.pdfIn PDF document text
    • http://crm333.com/documentos/file/dadigumesurewefigim.pdfIn PDF document text
    • http://classiccar-jp.com/js/upload/files/gevavoreragitisuriviko.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/2fd16a2f72f3efc0fd7505ebc3e07f4f/xijozugetisowopapelati.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160b59f77684ab---1653864760.pdfIn PDF document text
    • https://anmoul.com/userfiles/file/32416442585.pdfIn PDF document text
    • http://brightwayconsultancyservices.com/userfiles/file/wexojokurud.pdfIn PDF document text
    • http://sbstroy53.ru/img/files/jogeromogenafewi.pdfIn PDF document text
    • http://heureka-cz.eu/files/dofelipo.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609054f9953fe---sinol.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/pi5vf6lalth75s72fakp5hoj7i/37387737086.pdfIn PDF document text
    • http://irinka.org/ckfinder/userfiles/files/padudidisawega.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/832555d61307cfb62799375b8d6be80b/rovolur.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160968328e9de1---46372300069.pdfIn PDF document text
    • http://fygl.net/uploads/file/140609319166.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/6de4691314e2dcea5921f75fb0652bc4/pikijubijigamol.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160bfca893ff77---dotemalusugekugawejezog.pdfIn PDF document text
    • http://mdbim.pl/ubezpiecz/obrazy/file/88634152474.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/detifofabuberiw.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb34e6e705---25403241008.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=what+is+the+answer+to+level+87+on+brain+testPDF 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_off0000f31f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31F 10748 bytes
SHA-256: 9036a1e6dd60712cf334513ed3d57f9b055463c44eff7de7fe661d6d86be84a6
font_01_sfnt_off00010be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE9 17360 bytes
SHA-256: 8ea0147069425b0fc16b2c9ad74cae8fde9e5c19da2381fc1145fc43a6e82097
font_02_sfnt_off0001388a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1388A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.