Malicious PDF — malware analysis report

Static analysis result for SHA-256 47052bfe7b9e09dd…

MALICIOUS

PDF

83.3 KB Created: 2021-09-09 01:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: af3df336fcd44cedf448b0b406b1bafd SHA-1: 24d39f757368a0bd253b644c22ee200bdb74ffb9 SHA-256: 47052bfe7b9e09dd612fcba2ab4eadad136c7eb2ec152a0665c3793c7cf0430e
104 Risk Score

Malware Insights

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

The ML classifier strongly indicates this PDF is malicious. It contains a link farm pointing to compromised WordPress upload storage, suggesting a phishing or malware distribution attempt. The presence of urgency language further supports a malicious intent to trick the user into clicking the provided links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://xeroxexpres.cz/userfiles/file/wefazu.pdf In PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136943ed42f1---4613042879.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613488938291b---fesafixabegubivuna.pdfIn PDF document text
    • http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jopuvexunopinuferu.pdfIn PDF document text
    • https://netcsemege.hu/ckfinder/userfiles/files/41150987524.pdfIn PDF document text
    • http://ibb-online.ru/f/file/81690595835.pdfIn PDF document text
    • http://gesht.ru/admin/ckfinder/userfiles/files/givetutugano.pdfIn PDF document text
    • https://clubslotalmatriche.com/calcas/file/56459643202.pdfIn PDF document text
    • http://vibrator4you.cz/UserFiles/File/guluweweminuwo.pdfIn PDF document text
    • http://massarentearchitettura.com/userfiles/files/57684396976.pdfIn PDF document text
    • http://28777886.com/Lpf/UPFILE/userfiles/files/figafin.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161317a0cb7dfa---varawevarazi.pdfIn PDF document text
    • https://onderdurdu.com/upload/ckfinder/files/53172968701.pdfIn PDF document text
    • https://navoloki.mebel18.com/uploads/files/kipezumufojupirapigisow.pdfIn PDF document text
    • http://polins.org/public/userfiles/file/welebe.pdfIn PDF document text
    • http://kondicionery-elektrostal.ru/upload_picture/file/nibin.pdfIn PDF document text
    • http://lnhaihui.com/userfiles/file/20210904052312_1635600244.pdfIn PDF document text
    • http://familiegravesen.dk/userfiles/file/75309586734.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/189fd10d4bb34f960551aa578685ecfa/95588601261.pdfIn PDF document text
    • http://ngor2-3.com/file_media/file_image/file/juvabifibiruw.pdfIn PDF document text
    • https://cortopolis.ar/userfiles/file/xujokavuzelok.pdfIn PDF document text
    • http://chupanhnoithat.vn/upload/files/67122506028.pdfIn PDF document text
    • http://hkalc.com/userfiles/depuvusivafoj.pdfIn PDF document text
    • https://alternativi.brtim.com/uploads/wysiwyg/files/31004573208.pdfIn PDF document text
    • http://st-ark.it/userfiles/files/77153543867.pdfIn PDF document text
    • http://innospectrum.eu/hirlevel/file/fizinunuzovib.pdfIn PDF document text
    • http://dyneco.kr/userData/board/file/90187426414.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=heads+up+display+mode+androidPDF 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_off0000e0c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C3 17656 bytes
SHA-256: 84cf919ee74243f59c77c5363edf4f3367323a3764f9cd2953f5770053afe4ac
font_01_sfnt_off00010f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F2A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12741 10660 bytes
SHA-256: 0b8b8918b88f3a8ad7f1b19c2ee4ae49f4a8b68444000f24b7aea332fc687412

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