Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4717de1358787f…

MALICIOUS

PDF

90.3 KB Created: 2021-08-19 22:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2a22eeb9c39e2e3d00d708d2858483b6 SHA-1: 1dedc0c5fe23ba67c4a5951383349d11095fe1af SHA-256: 2e4717de1358787f75ea0d69f2d4123e507fda8bf646ef9432489785a53ca2ae
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The ML classifier and the 'Browser extension / update installation lure' heuristic strongly indicate malicious intent. The document likely serves as a lure to trick users into downloading and executing malicious content, potentially via embedded JavaScript or by directing them to compromised websites hosting further payloads. The numerous external URLs, many hosted on compromised WordPress sites, suggest a link farm designed to distribute malware or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://crewmak.ru/uplcv?utm_term=how+to+factory+reset+aegis+geek+vape PDF link annotation
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/aa78318b35221bcd7e9fe5ccf5b7f731/27741483411.pdfIn PDF document text
    • http://gidaero.com/upload/fckeditor/file/lelegapunoviso.pdfIn PDF document text
    • http://elcivan.com/admin/UserFiles/file/26114608854.pdfIn PDF document text
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/032cda8d9a3ff6e74fc7bc358fa6c087/zupixagilevezitupisedu.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/c495d92934ce1e06b908f1407e3e94dc/73577312940.pdfIn PDF document text
    • https://ysh.my/userfiles/file/batutozekiruk.pdfIn PDF document text
    • https://mimpishio1bet.com/contents//files/gegodudefen.pdfIn PDF document text
    • http://gruppocaminiti.it/userfiles/files/lemuzomomapagosoxuzuwikup.pdfIn PDF document text
    • http://samtekelektrik.com/files/99909682910.pdfIn PDF document text
    • http://fasson.vip/images/editor/files/27206503418.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/37217036497.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/192d8c2155fdd4061ea8b6d57ff58658/67596768174.pdfIn PDF document text
    • https://asiastudy.in/ckfinder/userfiles/files/tozekatoli.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c49c522d29b---wojugozijuriwigupanaxam.pdfIn PDF document text
    • http://savvyais.com/userfiles/file/fifipafuwukekozuguloz.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/cparee8penlvombdl1kskfcg37/lusojufijev.pdfIn PDF document text
    • https://vibanghanoi.com/uploads/files/moxipijuxazekogaxijak.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16081941bca09a---76217514549.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f655967e9d---xelawedabugezonigegivodip.pdfIn PDF document text
    • https://dursunguney.com/userfiles/files/60893331911.pdfIn PDF document text
    • http://fohow77.ru/upload/file/39055510824.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b680240492---kodakazoxaj.pdfIn PDF document text
    • http://bazis-expertiza.ru/ckfinder/core/connector/php/files/polofivovokefenugo.pdfIn PDF document text
    • http://galeriejacqueselbaz.com/userfiles/file/10688022572.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608c701198541---3187423505.pdfIn PDF document text
    • 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_off0000fb84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB84 16844 bytes
SHA-256: 61e78f03dffa0e5fae0535cb7e63f2f3a0d5c0f5b0fa481296d7b4a7ba0b03e8
font_01_sfnt_off000127bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127BC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FD3 10856 bytes
SHA-256: 42cc483b6744e82d3ae20feca543b486ee9336c8c13a18c4b5ffeda8159bfaa3

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