Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e7b224c110f1fe7…

MALICIOUS

PDF

93.7 KB Created: 2021-07-28 03:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 2be8f254ca514d039b845af1a6e575f3 SHA-1: 4c583454ab151333b35e51d86810fb8934242b57 SHA-256: 7e7b224c110f1fe730d8c3b1fa1cae28555771366e836da47815df441c0d4d75
156 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to various domains, many of which appear to be compromised WordPress sites or disposable hosting. The primary goal seems to be to lure users to these external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • 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
  • 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://mineraux-et-lithotherapie.fr/ckeditor/upload/files/81204073257.pdf In PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/a10e9e50690b728a0ae814bba69dc270/barudekobageruzedeleditas.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c56f4b7677f---17033864716.pdfIn PDF document text
    • https://sasalidayanisma.org/uploads/file/78420325666.pdfIn PDF document text
    • https://kovosluzba-praha.cz/res/file/99164878834.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/16073b0b3ae588---81215240251.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a74e0c0ebbd---34847589108.pdfIn PDF document text
    • https://mudraconsultancy.com/uploads/files/91243751484.pdfIn PDF document text
    • http://quaker1960.com/clients/3/34/346d0055920ff30d27c63167e405b0e7/File/fofofezobi.pdfIn PDF document text
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/bpsic3fj4jp59ctpin2h8kfub4/gazuvubakefo.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c39cad81873---lunizenegisu.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/b42c2d6b42c59c6185109b2999a38cc2/temati.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/17888bf159f041bc1b87f002b781d1d8/korekasaguredi.pdfIn PDF document text
    • https://deltarealestate-eg.com/userfiles/file/99972741949.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/53629241685.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/vedesemogejasatelujuru.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/14ca5413cd7bee0032af832492916edb/zavawirazawowezanepuveja.pdfIn PDF document text
    • https://llsindia.in/FCKeditor/file/17812178827.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8d7d77ce9---jezidazatebori.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/e5fcac450a6e134b8ba65b2ebb865abe/pelinalanozav.pdfIn PDF document text
    • http://wang023spa.com/userfiles/202107file/2021070912021570554.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/3f4bc0497a69c16ee0d158a09c07e446/bazuwifetalav.pdfIn PDF document text
    • http://portalcom-b2b.es/img/user///file/_0367630001620607576.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/dhjgkc9bu34elfh06vnjrnf5dt/zipawemusuwadami.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607892237b10b---64495296007.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ba4d1cf36f1---73698091279.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=how+to+repair+roku+3+remotePDF 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_off00010928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10928 17460 bytes
SHA-256: 0c82c4b0ab6387b8c932c8156369789aadff5b4a35ffb6853a4a626e92765514
font_01_sfnt_off00013706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13706 10536 bytes
SHA-256: 9db7b97c6737516c7b9c3b1370acff7482de25ed8b6b28f1d319fcf67de20cf9
font_02_sfnt_off00014f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F1B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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